Hi, Hmm.. sounds like some other people are seeing this too! When this happens for me I can use Alt-Tab and the alt-tab selection comes up, and I can sometimes even switch to a different program. However the bar at the bottom is totally unresponsive during this time, so clicking on the program doesn't bring it up but I can alt-tab to it. Any running programs continue to run fine - for example Xine if playing some music or a movie will continue to play this totally uninterrupted. As well I can always get to a console by using the ctrl-alt-F2/F3/F4/etc and run top if I need too... haven't checked yet what happens exactly, I've just killed off Firefox and it seems to go away. At the time I normally end up having a bunch of things open, like firefox w/ acrobat plugin active. Though I'm not really 100% sure what the conditions are to cause it because of its seemingly random nature. Regards, -Colin