E: GPG error: http://us.archive.ubuntu.com precise-updates InRelease: The following signatures were invalid: NODATA 2

What is the output of:

cd $HOME
wget https://dl.dropbox.com/u/8850924/fixpackage
chmod +x ./fixpackage
sudo ./fixpackage

Thanks

After following above steps, I'm getting follwing output.

pallav@pallav-Inspiron-5521 ~> sudo ./fixpackage
Ign http://dl.google.com stable InRelease
Ign http://dl.google.com stable InRelease
Ign http://ppa.launchpad.net trusty InRelease
Get:1 http://dl.google.com stable Release.gpg [181 B]
Get:2 http://dl.google.com stable Release.gpg [198 B]
Ign http://ppa.launchpad.net trusty InRelease
Get:3 http://dl.google.com stable Release [782 B]
Get:4 http://ppa.launchpad.net trusty InRelease [20.9 kB]
Ign http://in.archive.ubuntu.com trusty InRelease
Get:5 http://dl.google.com stable Release [1,347 B]
Get:6 http://dl.google.com stable/main amd64 Packages [1,191 B]
Ign http://ppa.launchpad.net trusty InRelease
E: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures were invalid: NODATA 2
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main amd64 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-amd64_Packages)
W: You may want to run apt-get update to correct these problems
Ign http://dl.google.com stable InRelease
Ign http://dl.google.com stable InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://dl.google.com stable Release.gpg
Hit http://dl.google.com stable Release.gpg
Ign http://ppa.launchpad.net trusty InRelease
Ign http://in.archive.ubuntu.com trusty InRelease
Hit http://dl.google.com stable Release
Hit http://dl.google.com stable Release
Hit http://dl.google.com stable/main amd64 Packages
Ign http://ppa.launchpad.net trusty InRelease
Get:1 http://in.archive.ubuntu.com trusty-security InRelease [65.9 kB]
Get:2 http://dl.google.com stable/main amd64 Packages [730 B]
Get:3 http://ppa.launchpad.net trusty InRelease [15.4 kB]
Get:4 http://archive.getdeb.net trusty-getdeb InRelease [8,143 B]
Ign http://archive.getdeb.net trusty-getdeb InRelease
E: GPG error: http://archive.getdeb.net trusty-getdeb InRelease: The following signatures were invalid: NODATA 2
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main amd64 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-amd64_Packages)
W: You may want to run apt-get update to correct these problems
pallav@pallav-Inspiron-5521 ~>

OK let's clear this up.

What is the output of:

sudo grep -R chrome /etc/apt/*

Thanks

The get-deb repo is notoriously flakes. I heard they have limited data on their service but I'm not sure how true that is. The source basically gave you no data. It's either down or abandoned or simply has no ability to send the data you requested.

it gives following o/p:

pallav@pallav-Inspiron-5521 ~> sudo grep -R chrome /etc/apt/*
/etc/apt/sources.list.d/google-chrome.list.save:deb http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/google-chrome.list:deb http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list~:deb http://dl.google.com/linux/chrome/deb/ stable main
pallav@pallav-Inspiron-5521 ~>

I also followed link:
 http://ubuntuforums.org/showthread.php?t=2202787

couldn't understand what's going wrong.

There was also an issue of "no space left on device".

I tried autoremove, autoclean, clean. None could help.

OK, run:

sudo gedit /etc/apt/sources.list

And remove this line:
deb http://dl.google.com/linux/chrome/deb/ stable main

Save the new file, close gedit and run:

sudo apt-get update

Is it now smoother? If so, what is the output of:

df -h

Thanks

nope.. still the same issue..

pallav@pallav-Inspiron-5521 ~> sudo apt-get update
Ign http://ppa.launchpad.net trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Get:1 http://ppa.launchpad.net trusty InRelease [15.4 kB]
Ign http://ppa.launchpad.net trusty InRelease
E: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures were invalid: NODATA 2

pallav@pallav-Inspiron-5521 ~> df -h
df: ‘/root/.gvfs’: Permission denied
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 14G 14G 0 100% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 786M 1.4M 785M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 87M 3.8G 3% /run/shm
none 100M 60K 100M 1% /run/user
overflow 1.0M 1.0M 0 100% /tmp
/dev/sda6 460G 455G 5.4G 99% /windows
/dev/sda10 8.8G 2.8G 6.0G 32% /home
/dev/sda1 496M 53M 444M 11% /boot/efi
/dev/sda5 433G 345G 89G 80% /media/pallav/OS
pallav@pallav-Inspiron-5521 ~>

sudo df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 14G 14G 0 100% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 786M 1.4M 785M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 87M 3.8G 3% /run/shm
none 100M 60K 100M 1% /run/user
overflow 1.0M 1.0M 0 100% /tmp
/dev/sda6 460G 455G 5.4G 99% /windows
/dev/sda10 8.8G 2.8G 6.0G 32% /home
/dev/sda1 496M 53M 444M 11% /boot/efi
/dev/sda5 433G 345G 89G 80% /media/pallav/OS

What is the output of:

uname -a; dpkg -l | grep linux-image

Thanks

pallav@pallav-Inspiron-5521 ~> uname -a; dpkg -l | grep linux-image
Linux pallav-Inspiron-5521 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Filesystem Size Used Avail Use% Mounted on
 /dev/sda8 14G 14G 0 100% /
 overflow 1.0M 1.0M 0 100% /tmp

Your root file system and the /tmp file system are completely full.

Try
sudo rm /var/cache/apt/archives/*.deb
df -h

what do you get?

yeah tried so..
though there are no files such as ".deb"

n still,

pallav@pallav-Inspiron-5521 ~> sudo df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 14G 14G 0 100% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 786M 1.4M 785M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 126M 3.8G 4% /run/shm
none 100M 64K 100M 1% /run/user
overflow 1.0M 1.0M 0 100% /tmp
/dev/sda6 460G 455G 5.4G 99% /windows
/dev/sda10 8.8G 2.8G 6.0G 32% /home
/dev/sda1 496M 53M 444M 11% /boot/efi
/dev/sda5 433G 345G 89G 80% /media/pallav/OS

Is there any way, I can reset the system? like uninstalling everything and set it up to default..

What is the output of:

cd /; sudo du -sh *

Thanks

What is the output of

uname -a
ls /boot
sudo du -sch /*

uname -a
Linux pallav-Inspiron-5521 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

pallav@pallav-Inspiron-5521 ~> ls /boot
abi-3.13.0-24-generic config-3.13.0-58-generic initrd.img-3.13.0-61-generic System.map-3.13.0-61-generic vmlinuz-3.13.0-58-generic.efi.signed
abi-3.13.0-45-generic config-3.13.0-61-generic initrd.img-3.13.0-65-generic System.map-3.13.0-65-generic vmlinuz-3.13.0-61-generic
abi-3.13.0-57-generic config-3.13.0-65-generic initrd.img-3.13.0-66-generic System.map-3.13.0-66-generic vmlinuz-3.13.0-61-generic.efi.signed
abi-3.13.0-58-generic config-3.13.0-66-generic initrd.img-3.13.0-71-generic System.map-3.13.0-71-generic vmlinuz-3.13.0-65-generic
abi-3.13.0-61-generic config-3.13.0-71-generic memtest86+.bin vmlinuz-3.13.0-24-generic vmlinuz-3.13.0-65-generic.efi.signed
abi-3.13.0-65-generic efi/ memtest86+.elf vmlinuz-3.13.0-24-generic.efi.signed vmlinuz-3.13.0-66-generic
abi-3.13.0-66-generic grub/ memtest86+_multiboot.bin vmlinuz-3.13.0-45-generic vmlinuz-3.13.0-66-generic.efi.signed
abi-3.13.0-71-generic initrd.img-3.13.0-24-generic System.map-3.13.0-24-generic vmlinuz-3.13.0-45-generic.efi.signed vmlinuz-3.13.0-71-generic
config-3.13.0-24-generic initrd.img-3.13.0-45-generic System.map-3.13.0-45-generic vmlinuz-3.13.0-57-generic vmlinuz-3.13.0-71-generic.efi.signed
config-3.13.0-45-generic initrd.img-3.13.0-57-generic System.map-3.13.0-57-generic vmlinuz-3.13.0-57-generic.efi.signed
config-3.13.0-57-generic initrd.img-3.13.0-58-generic System.map-3.13.0-58-generic vmlinuz-3.13.0-58-generic

cd /; sudo du -sh *
[sudo] password for pallav:
9.8M bin
332M boot
4.0K cdrom
4.0K dev
16M etc
2.8G home
0 initrd.img
0 initrd.img.old
1.6G lib
4.0K lib64
16K lost+found
343G media
4.0K mnt
847M opt
du: cannot access ‘proc/5382/task/5382/fd/4’: No such file or directory
du: cannot access ‘proc/5382/task/5382/fdinfo/4’: No such file or directory
du: cannot access ‘proc/5382/fd/4’: No such file or directory
du: cannot access ‘proc/5382/fdinfo/4’: No such file or directory
0 proc
45M root
du: cannot access ‘run/user/1000/gvfs’: Permission denied
1.6M run
13M sbin
4.0K srv
0 sys
1020K tmp

5.7G usr
4.7G var
0 vmlinuz
0 vmlinuz.old
455G windows

sudo du -sch /*
[sudo] password for pallav:
9.8M /bin
332M /boot
4.0K /cdrom
4.0K /dev
16M /etc
2.8G /home
0 /initrd.img
0 /initrd.img.old
1.6G /lib
4.0K /lib64
16K /lost+found
343G /media
4.0K /mnt
847M /opt
du: cannot access ‘/proc/5676/task/5676/fd/4’: No such file or directory
du: cannot access ‘/proc/5676/task/5676/fdinfo/4’: No such file or directory
du: cannot access ‘/proc/5676/fd/4’: No such file or directory
du: cannot access ‘/proc/5676/fdinfo/4’: No such file or directory
0 /proc
45M /root
du: cannot access ‘/run/user/1000/gvfs’: Permission denied
1.6M /run
13M /sbin
4.0K /srv
0 /sys
1020K /tmp
5.7G /usr
4.7G /var
0 /vmlinuz
0 /vmlinuz.old
455G /windows
813G total

For a quick cleanup I recommend deleting old versions of the kernel images.

cd /boot
sudo rm abi-3.13.0-24-generic abi-3.13.0-45-generic abi-3.13.0-57-generic
sudo rm config-3.13.0-24-generic config-3.13.0-45-generic config-3.13.0-57-generic
sudo rm initrd.img-3.13.0-24-generic initrd.img-3.13.0-45-generic initrd.img-3.13.0-57-generic
sudo rm System.map-3.13.0-24-generic System.map-3.13.0-45-generic System.map-3.13.0-57-generic
sudo rm vmlinuz-3.13.0-24-generic vmlinuz-3.13.0-45-generic vmlinuz-3.13.0-57-generic
sudo rm vmlinuz-3.13.0-24-generic.efi.signed vmlinuz-3.13.0-45-generic.efi.signed vmlinuz-3.13.0-57-generic.efi.signed

What is now the output of

df -h

What is the output of
sudo du -sch /var/*

pallav@pallav-Inspiron-5521 /boot> sudo df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 14G 13G 0 100% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 786M 1.4M 785M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 256M 3.6G 7% /run/shm
none 100M 68K 100M 1% /run/user
overflow 1.0M 1.0M 0 100% /tmp
/dev/sda6 460G 455G 5.4G 99% /windows
/dev/sda10 8.8G 2.8G 6.0G 32% /home
/dev/sda1 496M 53M 444M 11% /boot/efi
/dev/sda5 433G 345G 89G 80% /media/pallav/OS
pallav@pallav-Inspiron-5521 /boot> sudo du -sch /var/*
33M /var/backups
328M /var/cache
155M /var/crash
296K /var/games
4.2G /var/lib
4.0K /var/local
0 /var/lock
18M /var/log
4.0K /var/mail
4.0K /var/metrics
4.0K /var/opt
0 /var/run
76K /var/spool
24K /var/tmp
20K /var/www
4.7G total

Ok, a small step forward,

/dev/sda8 14G 13G 0 100% /

already one GB less, but still over the limit.

delete some more kernels

cd /boot
sudo rm abi-3.13.0-58-generic abi-3.13.0-61-generic
sudo rm config-3.13.0-58-generic config-3.13.0-61-generic
sudo rm initrd.img-3.13.0-58-generic initrd.img-3.13.0-61-generic
sudo rm System.map-3.13.0-58-generic System.map-3.13.0-61-generic
sudo rm vmlinuz-3.13.0-58-generic vmlinuz-3.13.0-61-generic
sudo rm vmlinuz-3.13.0-58-generic.efi.signed vmlinuz-3.13.0-61-generic.efi.signed

and again

df -h
sudo du -sch /var/lib/*
sudo dpkg --audit

pallav@pallav-Inspiron-5521 /boot> sudo du -sch /var/lib/*
[sudo] password for pallav:
16K /var/lib/AccountsService
4.0K /var/lib/acpi-support
4.0K /var/lib/alien
16K /var/lib/alsa
32K /var/lib/apache2
8.0K /var/lib/apparmor
256M /var/lib/apt
4.2M /var/lib/apt-xapian-index
17M /var/lib/aptitude
3.6M /var/lib/aspell
4.0K /var/lib/avahi-autoipd
4.0K /var/lib/backlight-level-acpi_video0
4.0K /var/lib/backlight-level-intel_backlight
8.0K /var/lib/backlight_debug
52K /var/lib/belocs
16K /var/lib/binfmts
56K /var/lib/bluetooth
20K /var/lib/colord
8.0K /var/lib/dbus
4.0K /var/lib/dhcp
20K /var/lib/dictionaries-common
220K /var/lib/doc-base
109M /var/lib/dpkg
220M /var/lib/dpkg.backup
940K /var/lib/gconf
36K /var/lib/ghostscript
4.0K /var/lib/git
4.0K /var/lib/hp
36K /var/lib/initramfs-tools
4.0K /var/lib/initscripts
4.0K /var/lib/insserv
117M /var/lib/jenkins
11M /var/lib/ldap
16K /var/lib/libreoffice
4.0K /var/lib/libuuid
1.3M /var/lib/lightdm
12K /var/lib/lightdm-data
16K /var/lib/locales
8.0K /var/lib/logrotate
4.0K /var/lib/man-db
4.0K /var/lib/misc
17M /var/lib/mlocate
3.3G /var/lib/mongodb
8.0K /var/lib/msttcorefonts
38M /var/lib/mysql
100K /var/lib/NetworkManager
20K /var/lib/nfs
4.0K /var/lib/ntpdate
8.0K /var/lib/os-prober
28K /var/lib/pam
28K /var/lib/php5
4.0K /var/lib/plymouth
4.0K /var/lib/pm-utils
44K /var/lib/polkit-1
107M /var/lib/postgresql
4.0K /var/lib/pulseaudio
4.0K /var/lib/python
0 /var/lib/python-support
8.0K /var/lib/rfkill
4.0K /var/lib/rpm
2.3M /var/lib/samba
12K /var/lib/sgml-base
4.0K /var/lib/slapd
4.0K /var/lib/snmp
256K /var/lib/sudo
60K /var/lib/systemd
8.0K /var/lib/ubiquity
8.0K /var/lib/ubuntu-drivers-common
4.0K /var/lib/ubuntu-release-upgrader
204K /var/lib/ucf
8.0K /var/lib/udisks2
8.0K /var/lib/update-manager
96K /var/lib/update-notifier
4.0K /var/lib/update-rc.d
268K /var/lib/upower
8.0K /var/lib/urandom
1.1M /var/lib/ureadahead
4.0K /var/lib/usb_modeswitch
496K /var/lib/usbutils
8.0K /var/lib/vim
8.0K /var/lib/xfonts
32K /var/lib/xkb
12K /var/lib/xml-core
8.0K /var/lib/yum
4.2G total
pallav@pallav-Inspiron-5521 /boot> sudo df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 14G 13G 5.8M 100% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 786M 1.4M 785M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 310M 3.6G 8% /run/shm
none 100M 68K 100M 1% /run/user
overflow 1.0M 1.0M 0 100% /tmp
/dev/sda6 460G 455G 5.4G 99% /windows
/dev/sda10 8.8G 2.8G 6.0G 32% /home
/dev/sda1 496M 53M 444M 11% /boot/efi
/dev/sda5 433G 345G 89G 80% /media/pallav/OS
pallav@pallav-Inspiron-5521 /boot>

1. It seems that a large amount of space is used by /var/lib/mongodb (3.3 GB)
Is this something that you need?

2. Does the command
sudo apt-get --purge autoremove
delete obsolete packages and free some space?

No, MongoDB is not much of useful now.. I can remove that.

n yeah.. sudo apt-get autoremove deletes obsolete packages. I haven't used it with "--purge" parameter

The --purge option of the apt-get autoremove command does not recover much space, it is more for cleanup of obsolete config files (small size).

What is the current status of
df -h
dpkg -l | egrep ' linux-[his]'
?

pallav@pallav-Inspiron-5521 /v/l/apt> sudo df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 14G 9.4G 3.6G 73% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 786M 1.4M 785M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 313M 3.6G 8% /run/shm
none 100M 64K 100M 1% /run/user
overflow 1.0M 1.0M 0 100% /tmp
/dev/sda6 460G 455G 5.4G 99% /windows
/dev/sda10 8.8G 2.8G 6.0G 32% /home
/dev/sda1 496M 53M 444M 11% /boot/efi
/dev/sda5 433G 345G 89G 80% /media/pallav/OS
pallav@pallav-Inspiron-5521 /v/l/apt> dpkg -l | egrep ' linux-[his]'
pallav@pallav-Inspiron-5521 /v/l/apt>

the / usage has been reduced to 73%
I recommend that you reboot the check whether the /tmp usage also goes down from 100%

Please provide the output of
dpkg -l | grep ' linux-'

thanks a lot..
its seems to have enough memory for now..

I'd really appreciate if you can help me out with "GPG Error:'some source' InRelease: the following signatures were invalid keyexpired".

'some source' such as: "http://archive.getdeb.net trusty-getdeb"

To correct the getdeb error, probably the following command helps:

wget -q -O- http://archive.getdeb.net/getdeb-archive.key | sudo apt-key add -

What is the full output of

sudo apt-get update

hello..
Thanks a lot..
I jst did solve this issue..

After Restarting the system, I got following error:

Ign http://archive.ubuntu.com trusty/universe Translation-en_IN
Fetched 51.2 MB in 3min 19s (257 kB/s)
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 531EE72F4C9D234C
W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9A06AEF9CB8DB0
W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EF4186FE247510BE
W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 83FBA1751378B444
W: GPG error: http://archive.getdeb.net trusty-getdeb InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A8A515F046D7E7CF
W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4874D3686E80C6B7
W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F1773AF13B1510FD
W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6AF0E1940624A220

SO.... by following this link: http://askubuntu.com/a/358424/507362

pallav@pallav-Inspiron-5521 ~> vi key1
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> vi key1
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> vi key1
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> vi key1
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> sudo apt-key add key1
OK
pallav@pallav-Inspiron-5521 ~> sudo apt-get update
...
...
Fetched 289 kB in 29s (9,813 B/s)
Reading package lists... Done
pallav@pallav-Inspiron-5521 ~>

solved that issue.. and it's working properly now..
Thanks a lot mate.. you're awesome

Quite a complicated way to solve the NOPUBKEY error.

The following single command should also have worked:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6AF0E1940624A220 531EE72F4C9D234C 5A9A06AEF9CB8DB0 EF4186FE247510BE 83FBA1751378B444 A8A515F046D7E7CF 4874D3686E80C6B7 F1773AF13B1510FD 6AF0E1940624A220

To ensure that you do not run into the "no space left" problem, you should do regular housekeeping by deleting obsolete versions of the kernel packages.

Please be aware that in the emergency repair actions you have manually deleted files, but the package management system still expects them to be there. To bring that back in sync, you should use the package management system programs (dpkg or apt-get etc.) to remove the packages for the kernel files with the numbers that were manually deleted (-3.13.0-24, -3.13.0-45, -3.13.0-57, -3.13.0-58 and -3.13.0-61).

If you need help with that, just ask.

yeah.. sure..
though I do remove obsolete packages regularly.
now i know where to look, I'll keep this in mind.

n also now, i'm running "aptitude update" for partially broken held packages.
Also replaced "source.list" with new sources which I need from: https://repogen.simplylinux.ch/

now memory status is reaching upto 80%

Filesystem Size Used Avail Use% Mounted on
/dev/sda8 14G 11G 2.9G 78% /

Hope I won't run out of it.

Thanks.