how to update kernal, i tried using system>>administration>>update manager
it shows one error:
Could not download all repository indexes
The repository might be no longer available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and the correct writing of the repository address in the preferences.
Code:
*archive.ubuntu.com/ubuntu/dists/dapper/multiverse/source/Sources.gz: Sub-process gzip returned an error code (1)
and after that
Your system is up-yo-date
in first attempt 6 updates were made like firefox 1.5.0.7 etc.