i've been using arch for a long time now and this was the first time it my comp freezed:
i did a pacman -Syu and then kde didn't start.
but by reinstalling the newest nvidia driver it worked again.
so i was working in kde when the system freezed completely (2 times).
i think it has to do something with the sound cause both times i did something with xmms when this happend.
It could be a dependency problem rather than a kernel issue .. which version of KDE are you using?
You might be able to check console 1 during the next freeze and see if there are any errors apparent there.
i can't switch to konsole cause the whole system crashed (not only kde)!
I meant switching to console 1 (type control-alt-f1). Still, if the entire system is frozen that probably won't work. Why don't you reboot and post your dmesg? If it's a kernel issue after all there might be some hints there.
so it seems my system crashes cause of flash in firefox conflicts with other applications that play sounds...
any workaround beside deinstalling flash?