I just got my 17" Unibody MBP which is an amazing machine. First thing I do is of course install iStat Pro. For some reason it is reporting the left fan at 0 RPM. Uh? So I install SMC Fan Control, and make a setting to ramp up both fans to 6,000 RPM. What happens? Left fan: 0 RPM. Uh... Occasionally the left fan will report 1000 RPM, but then it goes back down to 0. Is this normal? I was doing a time machine backup and the temp cranked up to 176 F and the left fan was still at 0 while the right fan was going good. I cant figure out if this is normal (IE the left fan only cools video and cannot be manually controlled) or if its defective. Can anyone else weigh in?