Getting fairly frequent (couple of times a day) lock ups with the latest F17 kernel on my ThinkPad T61P. Couple of times, it was when clicking a link in a Thunderbird e-mail; others, the machine was idle, still others, on putting the machine to sleep.
No such lockups with 3.4.6-2.
Not quite sure how to characterize this specifically enough to file a bug report. Anyone else seeing this?