Very quickly - I installed kubuntu 8.04.1, it had all the kde4 stuff in it,I added from the repos, but no option to use kde 3, tons of bugs, would not shut down properly, etc...

So, I downloaded another iso of what was supposed to be 8.04.1 and when I
fired it up it went straight to kde 3.5 desktop. I was very confused. So, I added the kde4.1 repo, and everything worked! Except, I did not wipe the drive before re-installing, (just formatted with gparted) so when I finally got to the kde 41 desktop, 2 issues presented themselves:

1) The desktop folder from the last install was still there. No links, just there.
2) All of the themes in the desktop settings/themes were still there, and I cannot remove them.

This has gotta be an easy fix, I just can't get my head around it - can somebody help me out?