My dears, I have a question and though it refers to hardware - memory, the reasons for why I'm planning an upgrade is because of the Parallels. The start up of Windows is not as fast as I want as it blocks all others application for a couple of moments, then it works pretty well on programs that dont require much memory. If it would make a significant difference I would upgrade to 4GB. The problem: I believe my Mac has 2*1GB memories, making it hard to upgrade to lets say 4GB, even if I buy a 2GB, (hope its working mounting different sizes in the the slots), still makes me sell the other 1GB left free, waste of time or money. Is there un upgrade solution or how could I do it to have 2* 2GB ? http://store.apple.com/uk/configure/MB467B/A?mco=MTkzOTI5Mg I appreciate a lot your advices bro!