Mysterious User files
I was cleaning up my hard drive today and found these mysterious files:

The three files, Us, Use, and User are empty. I did not create them. The Users arrow file is my regular OS X Users file, but the icon is the same icon for my Microsoft Mouse Preference Pane. I did not update my Microsoft Mouse software recently. Anyone have a clue how these happened? This kind of stuff always raises the malware paranoia index in me.

