In my 3 years of owning a Mac, I have NEVER had one crash! Today my iMac has crashed twice! I transparent grey screen comes up and says to hold the powerbutton to restart. Then Once I've rebooted it says that MacOSX quit unexpectedly and asks to send a report! There was some kind of update this morning, I want to say an Airport update? after I got that is when it crashed. Then again this afternoon! I'm getting the new OSX update now maybe this will fix whatever is wrong. Any Ideas on what happened?