The last few times I have been streaming videos online my MBP has crashed on me. I was watching Lost from ABC's site, and the screen grayed out on me and told me to hold my power button to restart. This has happened a few times to me in the last couple of days. One of the times it did it again as I was booting up after the crash. Could this be an indicator of something failing me? FYI I have a 2.33 MBP C2D 17" Any input would be greatly applreciated.