What would you guys do in my situation? I had a 512mb memory module that I had sold. I tested it on an iMac G4 prior to shipping and it registered as a 512mb stick. I removed it and placed it in an anti-static bag and shipped it out. The buyer received the memory stick and put it into his powerbook and it registered as a 256mb stick. A few days goes by and he said he checked the memory module again and it registered as a 256mb again. So what should I do? I mailed it out as a 512 but he says its a 256. Should I question the buyer's handling of the memory stick? Or if he plugged it into various machines causing it to mess up? or what?