I can't believe it, my trusty old MacBook Pro 17" 2.6GHz upgraded to 6GB RAM has now started beeping the dreaded three beeps, which doing some googling looks like a bad RAM slot? I took out the RAM and test individual sticks into the slots. It seem like the top slot is screwed. The bottom works fine with all the RAM modules (2GB, 2GB and 4GB), but as soon as you install any in the top slot -- up comes the three beeps on start up, or starts up and freezes after login, sometimes doesn't even go that far. So what are my options? One apparently is to clean the contacts on the bad RAM slot? With alcohol - what type - Jim Beam? (kidding) Or is it a log board replacement - which ain't gonna happen. Too expensive. Or do I live with just 4GB RAM, really miss the extra 2GB. Now I have 2GB RAM modules sitting around. Anything else I can try?