Sponaneous KDE logouts since recent upgrades (etch)
I'm having a problem with KDE; it seems to have only cropped up since recent apt-get (via Synaptic) upgrades. I regularly apply relevant upgrades via Synaptic. Key recent upgrades would be KDE and the kernel - to 2.6.15-686.
The problem happens when I leave the computer for a little while. The screensaver kicks in as normal and I'll return to the PC in say ten minutes and press a key/move the mouse. The screensaver clears and the desktop/application shows for a moment but then I'm logged out back to the KDM login screen and have to log myself in again.
Is this happening to anybody else? More importantly, how can I fix this? Am happy to provide further info if I can. My Linux experience level is intermediate.