authetication required comes even if i give the password

Hello Mruthyunjaya, and thank you for your report. Based on the information in the description, it appears that you are running Ubuntu 10.10, Maverick Meerkat. Unfortunately, support for this version was ended on 10 April 2012. Please update your machine to a newer version of Ubuntu as there have been many bug fixes in the time since 10.10.

Thanks!
Gary

thank you very much

But if i am trying to upgrade 10.10 to 11.04 i am getting this error "Error authenticating some packages"
Please help me solve this problem ;

the exact error message follows;
"
Error authenticating some packages

It was not possible to authenticate some packages. This may be a transient network problem. You may want to try again later. See below for a list of unauthenticated packages.

app-install-data
app-install-data-partner
apport
apport-gtk
bamfdaemon
banshee
banshee-extension-soundmenu
banshee-extension-ubuntuonemusicstore
binutils
byobu
compiz
compiz-core
compiz-fusion-plugins-main
compiz-gnome
compiz-plugins
compiz-plugins-main
desktopcouch
dpkg
dpkg-dev
ecryptfs-utils
file-roller
foo2zjs
gir1.2-dbusmenu-glib-0.4
gir1.2-panelapplet-3.0
glib-networking
gnome-keyring
gnome-nettool
gnome-panel
gnome-panel-bonobo
gnome-panel-data
gnome-power-manager
gnome-session
gnome-session-bin
gnome-session-common
gnome-user-guide
grub-gfxpayload-lists
gstreamer0.10-tools
gvfs
gvfs-backends
gvfs-bin
gvfs-fuse
gwibber
gwibber-service
gwibber-service-facebook
gwibber-service-identica
gwibber-service-twitter
initramfs-tools
initramfs-tools-bin
initscripts
language-pack-en
language-pack-en-base
language-pack-gnome-en
language-pack-gnome-en-base
language-selector
language-selector-common
language-selector-gnome
libbamf0
libdbusmenu-glib3
libdbusmenu-gtk3
libdecoration0
libdpkg-perl
libecryptfs0
libgcr0
libgksu2-0
libgl1-mesa-dri
libgl1-mesa-glx
libglu1-mesa
libgp11-0
libgpod-common
libgpod4
libgstreamer0.10-0
libgvfscommon0
libgweather-common
libgweather1
libimobiledevice2
liblircclient0
libnux-0.9-0
libnux-0.9-common
liboverlay-scrollbar-0.1-0
libpam-gnome-keyring
libpanel-applet-3-0
libpanel-applet2-0
libplymouth2
libpoppler-glib6
libpoppler13
libpulse-browse0
libpulse-mainloop-glib0
libpulse0
libreoffice-base-core
libreoffice-calc
libreoffice-common
libreoffice-core
libreoffice-draw
libreoffice-emailmerge
libreoffice-gnome
libreoffice-gtk
libreoffice-help-en-us
libreoffice-impress
libreoffice-math
libreoffice-style-human
libreoffice-writer
libtelepathy-logger2
light-themes
mobile-broadband-provider-info
nautilus-sendto
ntpdate
nux-tools
nvidia-common
openoffice.org-calc
openoffice.org-common
openoffice.org-draw
openoffice.org-emailmerge
openoffice.org-gnome
openoffice.org-gtk
openoffice.org-help-en-us
openoffice.org-impress
openoffice.org-math
openoffice.org-writer
overlay-scrollbar
plymouth
plymouth-label
plymouth-theme-ubuntu-logo
plymouth-theme-ubuntu-text
plymouth-x11
poppler-utils
pulseaudio
pulseaudio-esound-compat
pulseaudio-module-bluetooth
pulseaudio-module-gconf
pulseaudio-module-x11
pulseaudio-utils
python
python-apport
python-apt
python-apt-common
python-desktopcouch
python-desktopcouch-application
python-desktopcouch-records
python-desktopcouch-recordtypes
python-dev
python-glade2
python-gobject
python-gobject-cairo
python-gtk2
python-launchpadlib
python-minimal
python-papyon
python-problem-report
python-ubuntuone-control-panel
python-uno
rhythmbox
rhythmbox-plugin-cdrecorder
rhythmbox-plugins
shotwell
software-center
sysv-rc
sysvinit-utils
telepathy-logger
tomboy
ttf-opensymbol
tzdata
ubuntu-docs
ubuntuone-control-panel
ubuntuone-control-...

Hello again Mruthyunjaya! It might be helpful to change your archive mirror. To do this, just open Software Center and choose menu item "Edit"->"Software Sources...". In the dialog that is displayed, select the dropdown menu "Download from", and choose "Other", then choose a different server, if possible close to your location, from the list that is displayed.

Let us know if this does not help, and thanks again!

Hello Gary!! Even after i did the changes you have told ; i am unable to
upgrade the software
this the output i am getting in the terminal :(
"
........
Get:14 http://us.archive.ubuntu.com/ubuntu/ natty-updates/main bzip2 i386
1.0.5-6ubuntu1.11.04.1 [35.9kB]
Get:15 http://us.archive.ubuntu.com/ubuntu/ natty-updates/main libbz2-1.0
i386 1.0.5-6ubuntu1.11.04.1 [32.8kB]
Get:16 http://us.archive.ubuntu.com/ubuntu/ natty/main libdb4.8 i386
4.8.30-5ubuntu2 [657kB]
Get:17 http://us.archive.ubuntu.com/ubuntu/ natty/main install-info i386
4.13a.dfsg.1-6ubuntu3 [50.7kB]
Get:18 http://us.archive.ubuntu.com/ubuntu/ natty/main libgdbm3 i386
1.8.3-9ubuntu1 [33.8kB]
Get:19 http://us.archive.ubuntu.com/ubuntu/ natty-updates/main
linux-libc-dev i386 2.6.38-15.60 [791kB]
Get:20 http://us.archive.ubuntu.com/ubuntu/ natty/main zlib1g-dev i386
1:1.2.3.4.dfsg-3ubuntu3 [160kB]
Fetched 7398kB in 6s (13.0kB/s)

Could not download the upgrades

The upgrade has aborted. Please check your Internet connection or
installation media and try again. All files downloaded so far are
kept.

Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/d/dbus/libdbus-1-3_1.4.6-1ubuntu6.1_i386.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/d/debconf/debconf-i18n_1.5.36ubuntu4_all.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/d/debconf/debconf_1.5.36ubuntu4_all.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/libs/libselinux/libselinux1_2.0.96-1ubuntu2_i386.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/s/sysvinit/sysvinit-utils_2.87dsf-4ubuntu23.1_i386.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/u/util-linux/mount_2.17.2-9.1ubuntu4_i386.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/s/sensible-utils/sensible-utils_0.0.6ubuntu2_all.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/d/debianutils/debianutils_3.4.3ubuntu1_i386.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/p/pam/libpam0g_1.1.2-2ubuntu8.4_i386.deb
Size mismatch
Failed to fetch
http://us.archive.ubuntu.com/ubuntu/pool/main/p/perl/perl-modules_5.10.1-17ubuntu4.1_all.deb
Size mismatch

Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done
=== Command detached from window (Thu Jun 21 00:55:58 2012) ===
=== Command terminated with exit status 1 (Thu Jun 21 00:55:58 2012) ===
.."

I am getting this in between
"
Updating repository information
WARNING: Failed to read mirror file

Third party sources disabled

Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.

"
does that signify anything??

Hello Gary!!
I am able to solve my issue and now my Ubuntu is upgraded successfully ...
thanks alot for your efforts

i used the commands from : " lucazade "
in
http://ubuntuforums.org/showthread.php?t=1905677
to solve the problem
regards,
Mruthyunjaya Rao

Hello Mruthyunjaya! That is great news! I'm glad that that you've gotten it all fixed up, well done. :)

I will close this bug now. Thanks again for your help and please be sure to report any other issues or problems you may have with Software Center. Your help is very much appreciated!

Best regards,
Gary

Sure Gary!! Thanks for your help ....