[suse-kde] Kwin freezing / 3.0.2

Hi, since updating to SuSE 8.0/KDE 3 (now 3.0.2) the screen very often freezes (mouse moves, but no keyboard reaction) especially when moving a file selection window that's opened from konqueror. No /var/log/messages entries. I don't know whether it's a problem with konqueror, XFree86 or maybe OpenGL. The idea for the latter one comes from XScreensaver. I had to disable many of its GL-Moduls because they freezed the system. Any idea? BTW, the 3.0.2 update killed all off my global shortcut configuration. Thank you! Kind regards Frank