This is terrible. I tried starting up my (C2D 2.3 GHz) MBP from being off (completely--not asleep) and I got stuck in the login screen because I couldn't log on: my keyboard and track pad wouldn't work. They did nothing at all--no response. Neither the keyboard nor the track pad showed any problems before. This just happened all of a sudden. When I connected an external mouse, it worked fine and I was able to click the shut down and reset buttons or whatnot. I tried resetting the PRAM, but I guess the keyboard doesn't even work in the startup stage because it didn't do the second start up sound. Also, option wouldn't bring up the boot disc-choice screen. The keyboard must be dysfunctional even before OS X is loaded up. What's going on??? What can I do to fix this??? Thanks for all the help!