I have a mid 2010 13" Macbook Pro that has a couple of issues. iSight camera doesnt work, nor does the dvd drive. The left shift key is permanently engaged. However I have disabled it with keyremap software. But also and I dont know if this issue is due to any of the other problems but the system runs very sowly. One of the main things is when I press the exposé key it takes a good 20 seconds to show the windows and the same to hide them again. The dock animation is also very patchy. Anybody know what might be the cause?