hmmm, you using the latest microsoft drivers (1.1)? and have you tried it without the pad turned on?
__________________
Intel E7200 @ 4.2 ghz LAPPED| Zalman CNPS9700 | ASUS P5N-D | 9800 GX2 @ 697/1746/1054 | Patriot 4GB DDR2 800 (4-4-4-12) | Western Digital Caviar 500GB | Antec True Power Trio 650W |Windows vista x64 ultimate edition | Windows XP x64 Professional edition