Hello last month I have purchased the new branded laptop. This laptop will be based on the Intel core i7 processor basis. I have installed the windows XP service pack2 edition. I need some extra mouse with this laptop for easily handling the operating system. So, I have purchased the Logitech USB mouse. First few days it will help a lot for handling the operating system. But, there is some problem occurred in the mouse. There might be some times mouse position will be change for no reason. Can somebody specify the problem and its appropriate solutions?