Just recently, maybe for a week or two, after closing the lid on my MBP15, and long enough for it to go to sleep (set for 15 min), when I open the lid it is completely frozen. I can see the display on whereever I left it, but I can't do anything, no keys respond. Even the Caps Lock key light won't go on and off when pressed. So, I have to power off and on. I thought perhaps it had something to do with the Firefox/Flash problem that causes huge CPU usage, but I uninstalled the Flash plugin in FF which seems to have fixed it. But the computer freezes up even with FF not running. I do remember a firmware update I was asked to perform about a week ago. Maybe that has something to do with it. Any ideas? Any other reports of this?