KDE/X crashed after re-switching from konsole

[Patrick Schnorbus]

hi,

i have a big problem with x. it often crashes when switching to a konsole 
(CTRL+ALT+F1) and back to X.

I use SID with the most recent packages on a PIII with an NVIDIA TNT2 chip 
and the NVIDIA driver.

may you help?

TIA
patrick