The weird thing is that I didn't really do anything. No voltage changes or oc'ing, didn't have time to look into that yet - as said, I'm far from an expert, I only managed to reflash so quickly because of the very well written wiki) Phone was running well before, made calls and was on skype during the same session. It might have started though when entering the WiFi-coverage, noticed it shortly after I came home. Last package installed was Desktop Calender Widget, which has been running 3 days non-stop before with no problems. Will try k-p 49 as soon as I come back and made a good backup... Been installing deleted apps for quite some hours now. Thanks again for your help! (Is this still the right place to discuss / troubleshoot this issue? Should I start a new thread? If yes, where?)