"My understanding was that the C2D MBP's didn't have the same heat problem that the original CD MBP's did"
No "global" experience, but I had a CD2GHz 15"MBP from the second week of production and it was unbearably hot when running full bore until manual fan control came out. I now have a C2D 2.33 15" and it's every bit as hot as its predecessor. My take: no difference in CD or C2D MBP heat production, 15s are hot, 17s are not. Maybe that's why there's no 12"MBP.
Z
Hmmm... my previous MBP is 17" and wasn't hot. This brand new MBP is warmer, yet the Santa Rosa and LED should result in a cooler notebook, so the size seems to be a major factor...