Ok, Macbook Core Duo, 2gig Ram, 2.0 ghz processor. Ever since I upgraded to Leopard a month ago, it's been running noticeably hotter and the fans run constantly as well (they are at least more audible now). The temp, when idle, stays around 130F with fans at 1492. With just a few apps, it's up to 150-160F. If I'm using Handbrake, all the way to 190F until program finishes. Before I upgraded, the temps were about 15 degrees less at each stage. I checked to see if I something running in the background (the printer pane as someone suggested in another thread too). I will say that my HD is starting to get full, but it still has 10 gigs left. So, is there anything wrong with what it's doing? Should I be concerned with the temps? I've read through the board and can't seem to find anyone whose temps went up with Leopard upgrade.