Hi. I installed kubuntu 8.10 today. I had a beta CD. Now I added KDE 4.2 beta source. But it tells me that it is dependency problem.
Can anybody help?

Jacky

Are you sure you had a beta CD? You really should be using the 8.10 final CD to do installations.
Anyway, one package is probably trying to overwrite files an another package, making the package uninstallable, causing the dependency issues. If you had a log of the upgrade process that you could paste somewhere, that would be handy.

I myself had a kdelibs5-data dependency error.
First, try sudo apt-get install -f and see if it works.
If the above doesn't, try the following, if it works out for you. As JontheEchidna said, you must make such installations from a stable release. So we would be updating from KDE 4.1 beta -> KDE 4.1.2 -> KDE 4.2 beta:
1. Remove the 4.2 beta source (comment it out from the /etc/apt/sources.list file -- put a # at the beginning)
2. Save it and return to prompt, and do: sudo apt-get update && sudo apt-get upgrade
3. After it performs all the changes, open the sources.list file in vi or nano editor from a terminal.
4. Remove the # from the 4.2 beta repos
5. Again do: sudo apt-get update && sudo apt-get upgrade

That should work out.

Wow that worked! Thanks LinuxIsInnovation. And thanks to JontheEchidna for replying too.

But I dont understand this. When I updated to KDE 4.2, it downloaded 350MB of file. But now after removing and adding again, it downloaded only 180KB. Why?

That would be because once you upgraded, the packages needed for the upgraded were downloaded and stored. So when you did it again, it didn't need to download everything again.

So where are the files stored on my hard disk?

You can find those files at /var/cache/apt/archives folder.

Found it. Can I install them from there?

Yes. You may copy them and use them for installation on some other machine. Just make sure that you install the correct version (ie. on further updates to your system, you may have newer version of files there, together with older version of files). You have to install the dependency first which the respective package prompts upon installing.

Ok! Thanks you very much

You're welcome. Please add a [SOLVED] to the title of the thread.

Good day.