With 2 gigs of physical memory and a ~1 gig commit charge, x64 XP's built in task manager reports that I have a system cache size of slightly over a gig. Ok, this makes sense, I suppose I've got a few ...
Tiny cache corruption can imitate faulty graphic driver issues.
Clearing cache may something that a person will do for their computers and web browsers, with most having this feature available for the Android devices on their storage controls or recent apps.