OK, I've seen a few threads about people getting new LB`s because of various issues. I too fail victim to this issue. When you get your Mac back (any OSx 10.5x based machine) and you plug the Time Machine drive in, guess what... Total new back up! Yep new LB = new MAC address = Time Machine thinks you got a new machine. There is a couple guides written and between them you will either; 1. Get pi$$ed and format the Time Machine drive. 2. Call Apple Care and be told to reload the OS and restore from back up(which will not work since the mac change)... 3. Give up and hope to <Deity of your choice> your mac friend can help you. 4. Goto the genius bar @ the local Apple store and hope they know something about this issue. Google is NOT your friend in this case, Apple.com Forums = teh lose If someone feels froggy and wants to write a script to fix this or is willing to remote into a machine and do it for a pat on the back or a PayPal donation speak up! I'm sure other people will be looking for this help soon to.