Problem with a bug with the Brush tool - Only in Pressure Sensitivity.

Hello all,

I am stumped with this issue i am having with Flash cs5.5 AND cs6.

Whenever I use the brush - and only when pressure sensitivity is selected - as I click and drag the brush a long, the cursor becomes like a VHS tape, with distoration lines that constantly jump.

I am using a wacom tablet 21ux, but it does this every single time when using the pen or just clicking with the mouse - but only when pressure sensitivity is selected.

Im not sure if it is a driver issue, or a display issue or what. Any help would rule! I tried my best to capture a screenshot, but like i said, it is constantly jumpy.

Thanks!