I have been running 10.8 for a around 2 weeks and the last two days both the trackpad and mouse simply stop registering on click, rebooting into safe mode then rebooting again is the only thing that fixes it, I don't even have any third party apps installed! That's a pretty major bug to have on year old hardware with your new release. It feels like QC is slipping. I may give Ubuntu 12.06 a shot via boot camp this weekend and see if I can get my work done with no loss in productivity. I use vim for my editor anyway so it's not like all that much will be different. (I won't miss the beach ball if this works out).