Installed Bamboo (MTE 450 A) and SBE yesterday but the pen just isn't behaving as it should. Can draw circles/shapes/etc and drag things around, but can't do anything freehand. Instead, a piece of yellow notepaper appears - lets me draw freehand onto it (and enlarges as I move around the screen) - but then disappears as soon as I remove the pen from the surface.

Are there any settings I need to configure?