I reformatted my system partition after I realized it had been severely 0wn3d. I keep all my data backed up all the time on DVDs and isolated hard drives. Also, nobody has physical access to my computer. I lock it everytime I get up from the desk. [Edit] New Idea: My wireless was wide open at the time. However, none of the other machines on my network have any symptoms of being rooted and the machine that was rooted is does not have a wireless NIC, therefore it is not directly on the wireless section of the network. Just to call to mind another possibility.