I have experienced a number of kernel panics on my 2.5 months old 15'' core i5 MBP, roughly one every 1-2 weeks. It seems to occur completely randomly, i.e. the machine has not been under particularly heavy load or running any non-standard applications at the time of the kernel panics. In Console, the "Kernel Extensions in backtrace" tends to say something about "com.apple.driver.AppleIntelHDGraphics...", so maybe it is a graphics issue? I do not think this is normal for a new machine, and I'm planning to contact Apple because of this. Do you think Apple will replace my machine if I will demand that, within the 1 year warranty?