My mighty mouse is still under the original warranty. It has become nearly impossible to scroll. At first cleaning it with a sheet of paper, or a bit of Windex on a paper towel worked well. After a while both of those tricks stopped working for the most part. Now, if I try either it will enable me to scroll down maybe 1 web page before it quits working again. Does anyone know if I can just take the mouse in to the Apple store and swap it out since it is still within the first year of purchase of the PC?