for the circle, go to control panel, and then down left, click turn windows features on and off, and then scroll down to tablet pc optional features and make sure its unchecked. this feature is for tablet pcs and a lot of people complain that it will cause significant slowdown in photoshop with this feature turned On on a…
(for the circle)I take it you have the handwriting feature as well, I had to disable these things in vista too. I think you need to disable the Tablet PC Input Service, open up services.msc for it. i am pretty sure its something along those lines. but make sure you have another mouse as disabling the wrong one could…