Hey guys, I got this really strange issue with my late '09 MBP: Most of the times when i take my macbook somewhere, it freezes within a few minutes working on it. When i reboot it, it starts beeping 3 beeps repeatingly, indicating the RAM is bad. When i open the bottom to remove and reinsert the RAM, the problem is solved and i can use my laptop without any problem. So it seems the RAM wasn't bad after all. I bought an extra set of RAM just to be sure, but the problem persists. Even with just one bank of memory inserted. Does someone have an idea what could cause this problem or how to fix this? It is pretty annoying to need taking a screwdriver everywhere i go Thanks!