Since Friday, my MBP has been randomly getting beach balls. They usually stick around for about 1-2 minutes, but several times, the machine stays frozen and I am forced to reboot. I didn't do anything on Thursday or Friday that was major. It just kinda started happening. Doing some googling, it looks like some other SL users have the same problem. This isn't just safari doing its usual beach ballin'. It happens with seemingly every app.
Activity Monitor shows nothing, and I've been over the machine repeatedly with tech tool and other diagnostic apps. Clearing caches didn't do anything. Reinstalling SL didn't fix it either.
Any ideas? I'm at wit's end. I don't think it's a hardware issue because Windows runs flawlessly on it.