I have also encountered this bug. I'm not sure which theme I'm using, but it appears not to be plastik. I was using the default theme under Kubuntu 5.10, and recently upgraded to 6.06, at which point I think the bug first appeared.
The extra scroll buttons appear in other applications (notably Konqueror) but do not exhibit the same buggy behaviour, although I don't think they were there before the upgrade from 5.10 to 6.06. -- firefox scrollbar under kubuntu is broken https://launchpad.net/bugs/47760 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
