I've never had trouble with this computer ever. This is a first for me. I'm just using it as usual, I had itunes going and one or two web pages open at most, then a beach ball occurs randomly, the one you can see on your desktop. The computer became utterly unresponsive. I had no other choice but a hard reboot. Now the computer will simply not start. Every time I boot it up, I get the apple logo with a spinning beachball and it eventually Kernel Panics and asks me to reboot. I'm running disk utility right now repairing permissions from the OS X disc. Hopefully that'll help. Would this be a software issue or could it be hardware related? I opened it up and switched the RAM around to see if that would change the state of things, it did not. I really do not want to do this even though I have a time machine setup, but would an clean wipe of the hard drive and a fresh install of OS X help things ?