I have Windows '98. I recently switched to a new background. Now if i try to close a folder or window on the desktop, it takes a really long time to close. If I try to move a folder or window, it takes a really long time to move from the original location to the new location. Everything seems to move in slow motion. This only happens to items on the desktop and nowhere else. I already got rid of all existing spyware and viruses on my computer, but it still does this. What should I do?