Look at it from this side: If you formatted that thumb-drive, there shouldn't be ANY files on it, of any name. Thus, if you keep getting a file on it, you need to look at the computer that's doing the formatting. This may go beyond the scope of this site's quick answer format. If you can't get any local help you can email me at S a n d y (at) W E I J a x (dot) c o m (after you pull all the spaces out).
Sandy Wills
July 2007