I'm not so sure about that. I reformatted my hard-drive, and did a "clean install" of Windows XP. I now have five separate user accounts(family+ guest). Does all of these slow up my performance? I tried to create a new folder, no biggy right? "Access is Denied"!! How can this be??!! After all, I gave all family membersthe "administrator" status just to avoid such problems for everyone. My computer is in a horribly disconfigured state of affairs. Shared folders/ personal folders.... This is supposed to be faster, and more stable than my ME; I sure hope that its worth it.