I've noticed the last several times I play that my mouse gets stuck in rotate mode, making it nearly impossible to play. Is it my mouse, or something in the game?
Hmm well the mouse should rotate only if the middle mouse button is pressed. Otherwise it should behave normally. Can you read this topic: How to: Submit a Bug Ticket and include all the information requested.
Not seen any reports similar to this so I'd be inclined to think something on the Hardware/Software side for your mouse. Though I'm not entirely sure what you're describing when you say "Rotate mode" what exactly do you mean?
Closing due to lack of customer response.