index files failed to download

Remove the edgy sources you added in the file

/etc/apt/sources.list

They will probably look like this:

deb http://debian.o-hand.com edgy/

When you delete it (or them), then save the new file and run:

sudo apt-get update

and it will be fine.

# deb cdrom:[Ubuntu 10.10 _Maverick Meerkat_ - Release i386 (20101007)]/ maverick main restricted
deb-src http://archive.ubuntu.com/ubuntu maverick main restricted #Added by software-properties
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://archive.ubuntu.com/ubuntu maverick main restricted
deb-src http://archive.ubuntu.com/ubuntu maverick main multiverse universe #Added by software-properties

## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu maverick-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu maverick-updates restricted main multiverse universe #Added by software-properties

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu maverick universe
deb http://archive.ubuntu.com/ubuntu maverick-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu maverick multiverse
deb http://archive.ubuntu.com/ubuntu maverick-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu maverick-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu maverick-backports main restricted universe multiverse #Added by software-properties

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu maverick partner
# deb-src http://archive.canonical.com/ubuntu maverick partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu maverick main
deb-src http://extras.ubuntu.com/ubuntu maverick main

deb http://archive.ubuntu.com/ubuntu maverick-security main restricted
deb-src http://archive.ubuntu.com/ubuntu maverick-security restricted main multiverse universe #Added by software-properties
deb http://archive.ubuntu.com/ubuntu maverick-security universe
deb http://archive.ubuntu.com/ubuntu maverick-security multiverse
deb http://debian.o-hand.com edgy/
deb-src http://debian.o-hand.com edgy/
deb http://archive.ubuntu.com/ubuntu maverick-proposed restricted main multiverse universe
deb-src http://archive.ubuntu.com/ubuntu maverick-proposed restricted main multiverse universe #Added by software-properties

sorry, which part again.?

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 785, in simulate
    lock.lists_lock.acquire()
  File "/usr/lib/python2.6/dist-packages/aptdaemon/lock.py", line 70, in acquire
    process = get_locking_process_name(self.path)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/lock.py", line 87, in get_locking_process_name
    with open(lock_path,"r") as fd_lock_read:
IOError: [Errno 2] No such file or directory: '/var/lib/apt/lists/lock'

AD what I wrote or just blindly opened the file?

read my previous text and you will know....

Now you have removed the lines. When you run:

sudo apt-get update

Is it smooth?

sorry, i had removed both the source, but when i re run the update manager, it said

There seems to be a programming error in aptdaemon, the software that allows you to install/remove software and to perform other package management related tasks. Please report this error at http://launchpad.net/aptdaemon/+filebug and retry.

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 785, in simulate
    lock.lists_lock.acquire()
  File "/usr/lib/python2.6/dist-packages/aptdaemon/lock.py", line 70, in acquire
    process = get_locking_process_name(self.path)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/lock.py", line 87, in get_locking_process_name
    with open(lock_path,"r") as fd_lock_read:
IOError: [Errno 2] No such file or directory: '/var/lib/apt/lists/lock'

when i update using the terminal,

que@que-VPCEA16FG:~$ sudo apt-get update
[sudo] password for que:
Get:1 http://extras.ubuntu.com maverick Release.gpg [72B]
Ign http://extras.ubuntu.com/ubuntu/ maverick/main Translation-en
Get:2 http://ppa.launchpad.net maverick Release.gpg [316B]
Ign http://ppa.launchpad.net/synapse-core/ppa/ubuntu/ maverick/main Translation-en
Ign http://ppa.launchpad.net/synapse-core/ppa/ubuntu/ maverick/main Translation-en_GB
Get:3 http://dl.google.com stable Release.gpg [197B]
Get:4 http://archive.ubuntu.com maverick Release.gpg [198B]
Ign http://archive.ubuntu.com/ubuntu/ maverick/main Translation-en
Get:5 http://archive.ubuntu.com/ubuntu/ maverick/main Translation-en_GB [94.5kB]
Ign http://extras.ubuntu.com/ubuntu/ maverick/main Translation-en_GB
Get:6 http://ppa.launchpad.net maverick Release.gpg [316B]
Ign http://ppa.launchpad.net/tiheum/equinox/ubuntu/ maverick/main Translation-en
Ign http://ppa.launchpad.net/tiheum/equinox/ubuntu/ maverick/main Translation-en_GB
Get:7 http://ppa.launchpad.net maverick Release.gpg [316B]
Ign http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu/ maverick/main Translation-en
Ign http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu/ maverick/main Translation-en_GB
Get:8 http://extras.ubuntu.com maverick Release [9,762B]
Get:9 http://ppa.launchpad.net maverick Release [9,750B]
Get:10 http://ppa.launchpad.net maverick Release [9,739B]
Get:11 http://ppa.launchpad.net maverick Release [9,753B]
Get:12 http://extras.ubuntu.com maverick/main Sources [1,073B]
Get:13 http://ppa.launchpad.net maverick/main Sources [2,784B]
Get:14 http://ppa.launchpad.net maverick/main i386 Packages [4,685B]
Get:15 http://extras.ubuntu.com maverick/main i386 Packages [1,216B]
Get:16 http://ppa.launchpad.net maverick/main Sources [1,559B]
Get:17 http://ppa.launchpad.net maverick/main i386 Packages [1,880B]
Ign http://archive.ubuntu.com/ubuntu/ maverick/multiverse Translation-en
Get:18 http://archive.ubuntu.com/ubuntu/ maverick/multiverse Translation-en_GB [91.2kB]
Get:19 http://ppa.launchpad.net maverick/main Sources [2,466B]
Get:20 http://ppa.launchpad.net maverick/main i386 Packages [3,551B]
Ign http://archive.ubuntu.com/ubuntu/ maverick/restricted Translation-en
Get:21 http://archive.ubuntu.com/ubuntu/ maverick/restricted Translation-en_GB [2,332B]
Ign http://archive.ubuntu.com/ubuntu/ maverick/universe Translation-en
Get:22 http://archive.ubuntu.com/ubuntu/ maverick/universe Translation-en_GB [32.0kB]
Get:23 http://archive.ubuntu.com maverick-updates Release.gpg [198B]
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/main Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/main Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/multiverse Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/multiverse Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/restricted Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/restricted Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/universe Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/universe Translation-en_GB
Get:24 http://archive.ubuntu.com maverick-backports Release.gpg [198B]
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/main Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/main Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/multiverse Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/multiverse Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/restricted Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/restricted Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/universe Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-backports/universe Translation-en_GB
Get:25 http://archive.ubuntu.com maverick-security Release.gpg [198B]
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/main Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/main Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/multiverse Translation-en
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/multiverse Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/restricted Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/restricted Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/universe Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick-security/universe Translation-en_GB
Get:26 http://archive.ubuntu.com maverick-proposed Release.gpg [198B]
Ign http://archive.ubuntu.com/ubuntu/ maverick-proposed/main Translation-en
Get:27 http://archive.ubuntu.com/ubuntu/ maverick-proposed/main Translation-en_GB [98.8kB]
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en_GB
Ign http://archive.ubuntu.com/ubuntu/ maverick-proposed/multiverse Translation-en
Get:28 http://archive.ubuntu.com/ubuntu/ maverick-proposed/multiverse Translation-en_GB [91.2kB]
Get:29 http://dl.google.com stable Release [1,347B]
Ign http://archive.ubuntu.com/ubuntu/ maverick-proposed/restricted Translation-en
Get:30 http://archive.ubuntu.com/ubuntu/ maverick-proposed/restricted Translation-en_GB [2,332B]
Ign http://archive.ubuntu.com/ubuntu/ maverick-proposed/universe Translation-en
Get:31 http://archive.ubuntu.com/ubuntu/ maverick-proposed/universe Translation-en_GB [32.2kB]
Get:32 http://archive.ubuntu.com maverick Release [39.8kB]
Get:33 http://archive.ubuntu.com maverick-updates Release [31.4kB]
Get:34 http://archive.ubuntu.com maverick-backports Release [27.2kB]
Get:35 http://archive.ubuntu.com maverick-security Release [31.4kB]
Get:36 http://archive.ubuntu.com maverick-proposed Release [31.4kB]
Get:37 http://archive.ubuntu.com maverick/restricted Sources [4,370B]
Get:38 http://archive.ubuntu.com maverick/main Sources [829kB]
Get:39 http://dl.google.com stable/main i386 Packages [1,086B]
Get:40 http://archive.ubuntu.com maverick/multiverse Sources [151kB]
Get:41 http://archive.ubuntu.com maverick/universe Sources [4,179kB]
Get:42 http://archive.ubuntu.com maverick/main i386 Packages [1,492kB]
Get:43 http://archive.ubuntu.com maverick/restricted i386 Packages [5,992B]
Get:44 http://archive.ubuntu.com maverick/universe i386 Packages [5,791kB]
Get:45 http://archive.ubuntu.com maverick/multiverse i386 Packages [183kB]
Get:46 http://archive.ubuntu.com maverick-updates/restricted Sources [778B]
Get:47 http://archive.ubuntu.com maverick-updates/main Sources [99.8kB]
Get:48 http://archive.ubuntu.com maverick-updates/multiverse Sources [2,497B]
Get:49 http://archive.ubuntu.com maverick-updates/universe Sources [39.8kB]
Get:50 http://archive.ubuntu.com maverick-updates/main i386 Packages [277kB]
Get:51 http://archive.ubuntu.com maverick-updates/restricted i386 Packages [1,797B]
Get:52 http://archive.ubuntu.com maverick-updates/universe i386 Packages [116kB]
Get:53 http://archive.ubuntu.com maverick-updates/multiverse i386 Packages [4,813B]
Get:54 http://archive.ubuntu.com maverick-backports/main Sources [4,073B]
Get:55 http://archive.ubuntu.com maverick-backports/restricted Sources [14B]
Get:56 http://archive.ubuntu.com maverick-backports/universe Sources [6,082B]
Get:57 http://archive.ubuntu.com maverick-backports/multiverse Sources [14B]
Get:58 http://archive.ubuntu.com maverick-backports/main i386 Packages [8,318B]
Get:59 http://archive.ubuntu.com maverick-backports/restricted i386 Packages [14B]
Get:60 http://archive.ubuntu.com maverick-backports/universe i386 Packages [9,986B]
Get:61 http://archive.ubuntu.com maverick-backports/multiverse i386 Packages [14B]
Get:62 http://archive.ubuntu.com maverick-security/restricted Sources [14B]
Get:63 http://archive.ubuntu.com maverick-security/main Sources [39.8kB]
Get:64 http://archive.ubuntu.com maverick-security/multiverse Sources [1,763B]
Get:65 http://archive.ubuntu.com maverick-security/universe Sources [13.6kB]
Get:66 http://archive.ubuntu.com maverick-security/main i386 Packages [141kB]
Get:67 http://archive.ubuntu.com maverick-security/restricted i386 Packages [14B]
Get:68 http://archive.ubuntu.com maverick-security/universe i386 Packages [56.7kB]
Get:69 http://archive.ubuntu.com maverick-security/multiverse i386 Packages [3,754B]
Get:70 http://archive.ubuntu.com maverick-proposed/restricted Sources [14B]
Get:71 http://archive.ubuntu.com maverick-proposed/main Sources [78.1kB]
Get:72 http://archive.ubuntu.com maverick-proposed/multiverse Sources [640B]
Get:73 http://archive.ubuntu.com maverick-proposed/universe Sources [5,481B]
Get:74 http://archive.ubuntu.com maverick-proposed/restricted i386 Packages [14B]
Get:75 http://archive.ubuntu.com maverick-proposed/main i386 Packages [215kB]
Get:76 http://archive.ubuntu.com maverick-proposed/multiverse i386 Packages [1,668B]
Get:77 http://archive.ubuntu.com maverick-proposed/universe i386 Packages [26.9kB]
Fetched 14.5MB in 3min 52s (62.3kB/s)
Reading package lists... Done

is this normal.?

Looks better, what is the output of:

ls -la /var/lib/apt/lists/lock

Thanks

que@que-VPCEA16FG:~$ sudo ls -la /var/lib/apt/lists/lock
[sudo] password for que:
-rw-r----- 1 root root 0 2011-04-20 19:51 /var/lib/apt/lists/lock

like this.?

so, what do i need to do.? does this bug harmful to my computer.?
sorry for all the questions, though.. I'm new to the OS..

Thanks actionparsnip, that solved my question.