mbp 17" keyboard not working

hi all, so i updated to 10.6.4 the other day on my mbp 17" 2.93 mid 2009 model the other day. since, my computer has developed two problems. first and most annoying, the keyboard doesn't work properly anymore. shift keys don't work, then they do work. one side doesn't then the other side does. option and command do the same thing. is this a documented problem? i searched and saw it was prior to 10.6.4, but i never had any problems until this update. also, when i shut my computer, instead of going to sleep now... it goes crazy, fans jack up to full speed and it gets super hot. doesn't sleep at all.
funny enough before the update, when i closed the lid the computer would go to sleep and wouldn't wake up.

any suggestions? thanks

 

anyone else experiencing this with the update? i am trying to figure out if it is software or hardware. my bluetooth keyboard works fine.