Purchased my brand new rMBP yesterday. Did migration assistant from my MBA and waited for it to finish. Once done I began using the laptop with safari and Diablo 3 open (a game). Once I alt-tabbed to safari, the computer locked up and a forced reboot was required. After the reboot, the computer automatically launched safari, but then locked up immediately. Rebooted again but I never made it past a grey screen. So I booted into recovery, wiped my drive, reinstalled OSX, and transferred D3 over the network. Same thing just happened. Locked up while alt-tabbed out of D3, then locked up immediately once it was finished booting. Suggestions on what to do? Love the computer otherwise. The screen is amazing and beautiful. I want to exchange it but supply is tight and I don't want to have turn it in to the genius bar.