This tech bulletin might be helpful the next time: http://docs.info.apple.com/article.html?artnum=107199 Mac OS X: If your computer stops responding, "hangs", or "freezes" Jon On Jan 17, 2006, at 8:22 PM, david_elmo wrote: > I just used software update on my QS 933 to get latest on Tiger, > just the Mac OS update, about 28 MB. It said to restart or shut > down afterwards. I said ok restart. QS went off as usual and then > on but just froze screen with that Xish icon at the centre, no > spinning mouse curser or anything no matter moving the mouse. I had > to switch off at the power! (What else can one do ?