error in updating ubuntu 9.10 karmic koala

In the first two instances, you are having a warning because the particular PPA (personal archive) you are using either has no public key associated with it, or the owner has changed the public key. If those warnings annoy you, you can update the given public keys, like this for the first one, for example:
gpg --keyserver pgpkeys.mit.edu --recv-key 6E871C4A881574DE
gpg -a --export 6E871C4A881574DE | sudo apt-key add -

The real problem here is with the last line. It is due to some changes in the cairo-dock repos, which you will need to manually change to satisfy... Remember that cairo-dock is beta, and this is why such things may happen from time to time. Checking the link manually leads me to a parked domain, so my best bet is a change in repos has occured. You will need to manually update your repositories for cairo-dock, I am afraid.

follow the advice given at: https://help.ubuntu.com/community/CairoDock
and you should be all set.

bismay@bismay:~$ gpg --keyserver pgpkeys.mit.edu --recv-key 6E871C4A881574DE
gpg: requesting key 881574DE from hkp server pgpkeys.mit.edu

gpg: keyserver timed out
gpg: keyserver receive failed: keyserver error
bismay@bismay:~$ gpg -a --export 6E871C4A881574DE | sudo apt-key add -
[sudo] password for bismay: gpg: WARNING: nothing exported

Try this:

gpg --keyserver hkp://subkeys.pgp.net --recv-keys 6E871C4A881574DE

Then:

gpg --export --armor 6E871C4A881574DE | sudo apt-key add -

bismay@bismay:~$ gpg --keyserver hkp://subkeys.pgp.net --recv-keys 6E871C4A881574DE
gpg: requesting key 881574DE from hkp server subkeys.pgp.net
gpg: keyserver timed out
gpg: keyserver receive failed: keyserver error
bismay@bismay:~$

Try the same thing today. Maybe the key server's had been swamped.

so what shoul i do
when i start ubuntu it says you can partially upgrade is this problem is caused by this error?

Sure type or copy and paste this in the terminal:

sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade

Did you use the keyserver for the other keys?

Get:1 http://in.archive.ubuntu.com karmic Release.gpg [189B]
Hit http://security.ubuntu.com karmic-security Release.gpg
Hit http://deb.opera.com lenny Release.gpg
Ign http://security.ubuntu.com karmic-security/main Translation-en_IN
Hit http://packages.medibuntu.org karmic Release.gpg
Hit http://security.ubuntu.com karmic-security/restricted Translation-en_IN
Get:2 http://repository.cairo-dock.org karmic Release.gpg [1,026B]
Ign http://deb.opera.com lenny/non-free Translation-en_IN
Ign http://packages.medibuntu.org karmic/free Translation-en_IN
Ign http://security.ubuntu.com karmic-security/universe Translation-en_IN
Hit http://deb.opera.com lenny Release
Hit http://packages.medibuntu.org karmic/non-free Translation-en_IN
Ign http://in.archive.ubuntu.com karmic/main Translation-en_IN
Ign http://in.archive.ubuntu.com karmic/restricted Translation-en_IN
Hit http://packages.medibuntu.org karmic Release
Ign http://in.archive.ubuntu.com karmic/universe Translation-en_IN
Ign http://deb.opera.com lenny/non-free Packages
Ign http://in.archive.ubuntu.com karmic/multiverse Translation-en_IN
Get:3 http://in.archive.ubuntu.com karmic-updates Release.gpg [189B]
Ign http://in.archive.ubuntu.com karmic-updates/main Translation-en_IN
Get:4 http://dl.google.com stable Release.gpg [189B]
Ign http://in.archive.ubuntu.com karmic-updates/restricted Translation-en_IN
Ign http://in.archive.ubuntu.com karmic-updates/universe Translation-en_IN
Ign http://in.archive.ubuntu.com karmic-updates/multiverse Translation-en_IN
Hit http://archive.canonical.com karmic Release.gpg
Get:5 http://ppa.launchpad.net karmic Release.gpg [307B]
Get:6 http://in.archive.ubuntu.com karmic Release [65.9kB]
Ign http://deb.opera.com lenny/non-free Packages
Hit http://deb.opera.com lenny/non-free Packages
Ign http://deb.playonlinux.com karmic Release.gpg
Get:7 http://in.archive.ubuntu.com karmic-updates Release [44.1kB]
Hit http://in.archive.ubuntu.com karmic/main Packages
Ign http://archive.canonical.com karmic/partner Translation-en_IN
Hit http://archive.canonical.com karmic Release
Hit http://archive.canonical.com karmic/partner Packages
Hit http://archive.canonical.com karmic/partner Sources
Ign http://security.ubuntu.com karmic-security/multiverse Translation-en_IN
Hit http://security.ubuntu.com karmic-security Release
Hit http://security.ubuntu.com karmic-security/main Packages
Hit http://security.ubuntu.com karmic-security/restricted Packages
Ign http://ppa.launchpad.net karmic/main Translation-en_IN
Get:8 http://security.ubuntu.com karmic-security/main Sources [24.7kB]
Ign http://deb.playonlinux.com karmic/main Translation-en_IN
Hit http://ppa.launchpad.net karmic Release.gpg
Get:9 http://security.ubuntu.com karmic-security/restricted Sources [14B]
Get:10 http://security.ubuntu.com karmic-security/universe Packages [39.1kB]
Get:11 http://deb.playonlinux.com karmic Release [1,723B]
Ign http://deb.playonlinux.com karmic/main Packages
Ign http://ppa.launchpad.net karmic/main Translation-en_IN
Get:12 http://security.ubuntu.com karmic-security/universe Sources [7,689B]
Ign http://deb.playonlinux.com karmic/main Packages
Get:13 http://security.ubuntu.com karmic-security/multiverse Packages [1,666B]
Get:14 http://security.ubuntu.com karmic-security/multiverse Sources [577B]
Get:15 http://ppa.launchpad.net karmic Release.gpg [307B]
Hit http://deb.playonlinux.com karmic/main Packages
Ign http://ppa.launchpad.net karmic/main Translation-en_IN
Get:16 http://ppa.launchpad.net karmic Release [66.0kB]
Ign http://ppa.launchpad.net karmic Release
Hit http://ppa.launchpad.net karmic Release
Get:17 http://ppa.launchpad.net karmic Release [66.0kB]
Ign http://ppa.launchpad.net karmic Release
Hit http://ppa.launchpad.net karmic/main Packages
Hit http://ppa.launchpad.net karmic/main Sources
Get:18 http://ppa.launchpad.net karmic/main Packages [84.5kB]
Hit http://ppa.launchpad.net karmic/main Packages
Get:19 http://repository.cairo-dock.org karmic/cairo-dock Translation-en_IN [1,026B]
99% [19 Translation-en_IN bzip2 0] [Connecting to in.archive.ubuntu.com (111.91bzip2: (stdin) is not a bzip2 file.
Ign http://repository.cairo-dock.org karmic/cairo-dock Translation-en_IN
Ign http://packages.medibuntu.org karmic/free Packages
Ign http://packages.medibuntu.org karmic/non-free Packages
Ign http://packages.medibuntu.org karmic/free Sources
Ign http://packages.medibuntu.org karmic/non-free Sources
Ign http://packages.medibuntu.org karmic/free Packages
Ign http://packages.medibuntu.org karmic/non-free Packages
Ign http://packages.medibuntu.org karmic/free Sources
Ign http://packages.medibuntu.org karmic/non-free Sources
Err http://packages.medibuntu.org karmic/free Packages
  Unable to connect to packages.medibuntu.org http:
Err http://packages.medibuntu.org karmic/non-free Packages
  Unable to connect to packages.medibuntu.org http:
Err http://packages.medibuntu.org karmic/free Sources
  Unable to connect to packages.medibuntu.org http:
Err http://packages.medibuntu.org karmic/non-free Sources
  Unable to connect to packages.medibuntu.org http:
Get:20 http://repository.cairo-dock.org karmic Release [1,026B]
Ign http://repository.cairo-dock.org karmic Release
Get:21 http://repository.cairo-dock.org karmic/cairo-dock Packages [1,026B]
99% [Connecting to in.archive.ubuntu.com (111.91.91.34)] [Waiting for headers]bzip2: (stdin) is not a bzip2 file.
Err http://repository.cairo-dock.org karmic/cairo-dock Packages
  Sub-process /bin/bzip2 returned an error code (2)
Ign http://in.archive.ubuntu.com karmic/restricted Packages
Ign http://in.archive.ubuntu.com karmic/main Sources
Ign http://in.archive.ubuntu.com karmic/restricted Sources
Ign http://in.archive.ubuntu.com karmic/universe Packages
Ign http://in.archive.ubuntu.com karmic/universe Sources
Ign http://in.archive.ubuntu.com karmic/multiverse Packages
Ign http://in.archive.ubuntu.com karmic/multiverse Sources
Ign http://in.archive.ubuntu.com karmic-updates/main Packages
Ign http://in.archive.ubuntu.com karmic-updates/restricted Packages
Ign http://in.archive.ubuntu.com karmic-updates/main Sources
Ign http://in.archive.ubuntu.com karmic-updates/restricted Sources
Ign http://in.archive.ubuntu.com karmic-updates/universe Packages
Ign http://in.archive.ubuntu.com karmic-updates/universe Sources
Ign http://in.archive.ubuntu.com karmic-updates/multiverse Packages
Ign http://in.archive.ubuntu.com karmic-updates/multiverse Sources
Ign http://in.archive.ubuntu.com karmic/restricted Packages
Ign http://in.archive.ubuntu.com karmic/main Sources
Ign http://in.archive.ubuntu.com karmic/restricted Sources
Ign http://in.archive.ubuntu.com karmic/universe Packages
Ign http://in.archive.ubuntu.com karmic/universe Sources
Ign http://in.archive.ubuntu.com karmic/multiverse Packages
Ign http://in.archive.ubuntu.com karmic/multiverse Sources
Ign http://in.archive.ubuntu.com karmic-updates/main Packages
Ign http://in.archive.ubuntu.com karmic-updates/restricted Packages
Ign http://in.archive.ubuntu.com karmic-updates/main Sources
Ign http://in.archive.ubuntu.com karmic-updates/restricted Sources
Ign http://in.archive.ubuntu.com karmic-updates/universe Packages
Ign http://in.archive.ubuntu.com karmic-updates/universe Sources
Ign http://in.archive.ubuntu.com karmic-updates/multiverse Packages
Ign http://in.archive.ubuntu.com karmic-updates/multiverse Sources
Err http://in.archive.ubuntu.com karmic/restricted Packages
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic/main Sources
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic/restricted Sources
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic/universe Packages
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic/universe Sources
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic/multiverse Packages
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic/multiverse Sources
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/main Packages
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/restricted Packages
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/main Sources
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/restricted Sources
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/universe Packages
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/universe Sources
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/multiverse Packages
  Unable to connect to in.archive.ubuntu.com http:
Err http://in.archive.ubuntu.com karmic-updates/multiverse Sources
  Unable to connect to in.archive.ubuntu.com http:
Ign http://dl.google.com stable/non-free Translation-en_IN
Get:22 http://dl.google.com stable Release [2,540B]
Get:23 http://dl.google.com stable/non-free Packages [1,010B]
Fetched 276kB in 2min 5s (2,195B/s)
W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6E871C4A881574DE
W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7A5579BA519AE6BB
W: GPG error: http://repository.cairo-dock.org karmic Release: The following signatures were invalid: NODATA 1 NODATA 2
W: Failed to fetch http://packages.medibuntu.org/dists/karmic/free/binary-i386/Packages.gz Unable to connect to packages.medibuntu.org http:

W: Failed to fetch http://packages.medibuntu.org/dists/karmic/non-free/binary-i386/Packages.gz Unable to connect to packages.medibuntu.org http:

W: Failed to fetch http://packages.medibuntu.org/dists/karmic/free/source/Sources.gz Unable to connect to packages.medibuntu.org http:

W: Failed to fetch http://packages.medibuntu.org/dists/karmic/non-free/source/Sources.gz Unable to connect to packages.medibuntu.org http:

W: Failed to fetch http://repository.cairo-dock.org/ubuntu/dists/karmic/cairo-dock/binary-i386/Packages.bz2 Sub-process /bin/bzip2 returned an error code (2)

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/restricted/binary-i386/Packages.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/main/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/restricted/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/universe/binary-i386/Packages.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/universe/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/multiverse/binary-i386/Packages.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/multiverse/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/main/binary-i386/Packages.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/restricted/binary-i386/Packages.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/main/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/restricted/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/universe/binary-i386/Packages.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/universe/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/multiverse/binary-i386/Packages.gz Unable to connect to in.archive.ubuntu.com http:

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/multiverse/source/Sources.gz Unable to connect to in.archive.ubuntu.com http:

E: Some index files failed to download, they have been ignored, or old ones used instead.

no it didn't helped i checked the source which was bisgi a theme package i entered the site name an d checked and found out that that package was wasn't there nay more.So that's why ubuntu was unable to download the package information.
So i accidentally commited a mistake and deleted one fo the disk partition in vista and the grub boot loader failed and i got an errror 17.Then i formated the whole asystem i installed windows 7 then ubuntu again .now i have ubuntu 9.10.I have to update all the things from the beginnig again.But thanx for the help and suggestions.

Thanks zvacet, that solved my question.