Recently I noticed that files that I put on my desktop do not appear on the desktop, despite the fact that you can see them in the Finder on the desktop. Oddly enough, the icon for my HD does appear on the desktop. Also, if I try and make a new folder on the desktop, I get an error code. Also, if I drag the mouse with the button held down, an empty icon is "highlighted" on the desktop. I cannot click on it any in form, and it does NOT appear in the finder. any thoughts? thanks in advance.