In the Windows folder there are system sub-folders, usually hidden. What would cause documents accessed through our network server to randomly start coping files to the systems web folder? We do not have Exchange, but all files are accessed through a network server. What brought this to our attention is that about a month ago some computers with 80+ gig were running low on space, which we knew couldn't be posible, and we had to figure out what was taking up so much space. Once we discovered these files they were deleted. However, it has started happening again to at least one person, but everyone else is fine - so far.