I've got a 12 inch PB, which I bought last July running Tiger 10.4.5. The biggest problem with it is that it start to get very hot when I'm using certain browsers. Initially the problem was with Firefox, when using that to browse, CPU usage would go up to 100% and my machine would heat up to 50c to 55c occasionally hitting 60c. So I ditched that and started to use Camino, but I had the same problem. So then I switched to Safari same problem there. I'm currently using Opera which seems to be ok, no overheating, but its the slowest of the four browsers that I've used. Is this overheating typical of those browsers or am I just doing something wrong?