Okay so I do not have a mousepad with my magic mouse, because everyone I have tried just doesn't track very well at all. My wood desk seems to be perfect so I have been using that. However after a day of use I have all this black residue junk on my desk that I have to get out the spray cleaner and clean it up, which requires a lot of scrubbing. Has anyone else seen this? It seems like the black rubber pads are rubbing off on my desk....if anyone has had this problem what did you do to fix it? New Magic Mouse? Thanks for taking your time in reading my post and hope everyone has a wonderful day!