I am using Wacom tablets for many years. Since I've installed Visual Studio 2010, I started to have problems with my both tablets: Volito and Bamboo Fun. The mouse pointer can be controlled properly with tablet pen in all other applications, but at some point in time will just be frozen in some of the Visual Studio 2010 windows. It continue to work properly in some other windows of Visual Studio 2010 and might also work properly in other instances of Visual Studio 2010.
I have this problem with both tablets. Another very interesting thing is that in Bamboo Fun you can control the mouse pointer also with the finger, because the surface of the tablet is finger sensitive. When the cursor is frozen in a Visual Studio 2010 window, it still can be controlled with the finger in that window, even if it can't be controlled by the tablet pen. This makes me think that this might be actually a wacom driver issue.