First off I just want to make this clear I love my SR to death and would never want to trade it for the Penryn. Okay with that said, my trackpad mouse wasn't working at all and fluttering around a lot (temperature was not an issue and fans were all running at low to average speed). I noticed it last night when I was using it on my bed disconnected from the power adapter and just didn't think much of it while I was trying to type a paper up because my old cpu's used to have really laggy track response when disconnected from ac source. Today I just happen to use it plugged in at my desk to see and it was doing it again (cursor not responding, then doing my hot corners sporadically). I restarted my computer and it's completely fine now. Has this ever happened to any one? And if it happens again should I take it to an apple store?