Robert Grah wrote:
any ideas? can you give me an hint in which logfiles i have to look to maybe figure out what the problem causes?
Look in /var/log/Xorg.log.
I've had something similar with some xwidgets applications related to some bug with intel video and/or unaccelerated video.
The crash is due to a segfault.
It can be totally unrelated but it might help, Charles