My one month old 15" i7 MacBook Pro had a couple freezes. 1 gray screen and a couple instant freezes to be exact. I backed it up with time machine and made an appointment with the Genius Bar. The Genius didn't really find the problem but notice the machine "wasn't happy" with a couple applications; so the genius and the manager swapped it out for the another MacBook Pro (w/ the same specs). I just restored the new MacBook Pro from Time Machine and with iStat Pro, I noticed the CPU and GPU runs about 7 to 10 degrees Celsius hotter than my previous MacBook Pro. Is this normal or should I be concerned? Maybe I just haven't "broken" it in yet. I'll give it a week and see if the temp still runs higher.