On 12/11/2011 12:56 AM, Ben Skeggs wrote: > If you can manage to reproduce it, hopefully in some reliable way, it'll > be a huge help. Well, I can confirm it's a real regression. It's happened again, and I've never seen anything like it before. Unfortunately, I can't offer any reasonable steps to reproduce it for testing. It's only happened when watching video with mplayer, but it seems to happen at a rate of about once per hour while watching video. Enough to be seriously annoying, but not enough to be seriously useful when testing. Definitely enough to keep me from upgrading. I'm open to whatever else might be helpful if you have any ideas. Log of the last occurrence attached. Berck Nash