Is there a differences between slipstreaming a XP SP2 disc with SP3 and slipstreaming a XP disc without any SP with SP3? I know that the latest SP has all the fixes from the previous ones but in terms of performance would slipstreaming a XP disc without any SP with SP3 be cleaner than slipstreaming a XP SP2 disc with SP3?? Would SP3 only make changes that need to be made on the XP SP2 disc keeping the SP2 stuff that didn't change or would it write everything in causing a "bloated" XP SP3 to be created? Thanks