Dear all, Recently I was cleaning my Unibody MacBook with an alcohol based cleaning product. I was cleaning my Keyboard, upon after about 30 minutes later my shift key stopped working. It appears some of the cleaning product has gotten itself under the keyboard? About 2 hours after, the shift key started working again, but later my F1, 1, Q,A,Z and F11, F12 and Delete keys stopped working? After this I unplugged the machine and put it on the radiator Too late? Perhaps . Today I powered it on again but still the same keys stopped working, though the shift key still works. I've connected an external keyboard to type this up. I bought this machine about November 2008 with only the basic warranty. Is there anything I can do?