Sorry if this has been brought up before, i did a quick search and couldnt find what i was after. I have had my current N900 for 3 weeks now, after it was replaced. After giving it a little settling time i started thinking about overclocking. Now, i have linux kernel for power user (2.6.28.10) installed, and brought it up to 850MHz. It ran for a day, then randomly shut down while in my pocket. Not having made a widget to OC upon each start up, I just left it running at stock for a while. The annoying part is since then it has randomly shut down 3 more times. I have not had this issue with my previous 2 N900's, and am rather confused as to why its not behaving even at stock? What could cause this to happen?