Joe:

I have no experience with your mouse but IF it is a wireless IR mouse they can be pretty particular about what surface you roll them on, often times exhibiting the same issues you describe. For example, if I try and use my wireless mouse on a shiny surface it goes nuts.

Finially, I'm sure Best Buy will take it back but exchange it for a Microsoft Wireless Mouse. I've had several over the years and they all were problem free.