robbie, we should all run our box the way that suits us personally...performance or no, there's still alot to be said about organizing your installation, for instance, I don't think even if ms is correct, the differance would be noticeable, so, if you like the organization of partitons, then go ahead and organize, but for those people that partition because they thought they were supposed to, well it seems as if microsoft is telling you your computor is less efficient with partitions, so don't