Hi everyone, first off, if this is the wrong forum for a question like this please let me know (and where to go!).

I've just started to use Suse 8.1 distro, everything's working fine except for one annoying little detail...
If I launch any terminal/application, when I mimimize the app/T those little black lines that point to the window's edges remain. I'm using KDE if that's any help. Does it sound anything like a refresh problem to anyone? Has anyone come across something like this before?

If I refresh the desktop those lousy little things disappear..........

all the best,
Robin.