I recently sent out my black MacBook (C2D 2.16ghz, 4gb mem, 320gb HD, superdrive) out for repair again and it has finally came back. The repairs done were (according to service notes): First Time: New superdrive + new palm rest Second Time: Repaired system board, added thermal grease and replaced heatsink Now, I want to basically stress test this machine. I am planing on selling it because I gave up waiting for it and bought one of the new 2.4ghz aluminum MacBooks. What program(s) would be the best to basically push this mac to the limit for like benchmarking or just overall tests? Thanks!