I'm planning to buy one of the new 17" MBP C2D as soon as they show up in the Apple store next door in tax free NH. Currently, I use a 4 year old 14" Pentium 4 laptop. It does get pretty hot, but I've learned to tolerate it and actually use it on my lap quite a bit (in fact most of the time when I'm at home). While I've heard that MBPs do get relatively hot, I doubt they get as hot as my Pentium 4 (I've "groped" a few of them to make sure ), but given how heavy the 17" MBP is relative to its thinness and large width, I'm concerned that if I use it on my lap a lot the case my eventually start to bow. Are my concerns unfounded, or have any of you people experience dsuch problems?