I'm finally ordering my iBook this week, and I plan on getting the newest G4@1.2ghz with all the trimmings... But everywhere I've looked and asked, I can never find how much Total RAM the newest iBook G4's can hold. I found a link that said you can buy a 512 meg upgrade to add to the 256, but It was just on a pop-up and I didn't trust it much. But I really need to know since I'll be maxing out the RAM!