I've been having a hard time diagnosing this problem since I'm not sure exactly how to phrase what's happening or describe it in it's appropriate terms;
When I'm working on my cintiq, very often it will work normally, then 'hang for a split second, as though something were loading, then suddenly I've lost pressure sensitivity, and the cursor no longer 'maps' to the stylus' position over the cintiq, but instead behaves more like a mouse, if that makes sense?
Turning the cintiq off and on again clears it, but only for about half a minute before the same thing happens again.
This started happening not too long after I reinstalled an older driver (612-4) to work around another issue where the cintiq would erratically loose it's pressure sensitivity, but i recently installed a slightly newer one (615-3) but still seem to be getting the same issues.
EDIT: Forgot to mention that my OS is windows XP, and this is mostly through using Photoshop CS 5
Any help would be greatly appreciated!