My 'pro runs hot whether in Windows or OS X... it runs fine no matter what but IMO the thermal paste issue is what's making things so hot. I just haven't dissected it yet. I've got Vista on it now and it works almost perfectly. Haven't got the iSight working yet nor the eject key but do have the brightness and Startup panel applets going. It's now pretty much my main machine at home and I find myself in OS X about 50% of the time. The problem is that I use two or three windows-only apps a LOT. Might do Parallels and stay in OS X full time, just haven't gotten there yet.