OK then, is it a wireless mouse. Sorry, not about to look that mouse up. I am feeling lazy at the moment. I understand that wireless mice sometimes have difficulty with sending/recieving of signals due to distance, position, angle, battery power, or signal disruption.
And I am sorry, is the problem fixed with this new mouse or is it continuing. After my initial read-through, it seemed as if it was continuing, but your current response is in the past tense implying the issue has been solved by replacing the hardware and installing new drivers.