I've come to notice from using the same XP install for over a year that operations start to become noticably slow after several months. I found that creating a new user account resolved this problem twice, so I'm led to believe that data is being accumulated throughout the lifetime of the user account and XP iterates over it during certain operations like invoking a program or popping a menu (especially the start menu, but some context menus as well). Does anyone know the exact nature of this situation and if so, a way to remedy it that doesn't involve deleting the user profile and creating a new one. I'm using SP1 with all of the hotfixes released before SP2. I have no interest in installing SP2 unless there is a significant reason to do so (such as a major security hole, which I haven't seen news of yet). All information appreciated.