make sure you are running 1.3.19 ... several versions of 1.3.x up til that one have mouse movement issues... still might happen in 1.3.19 though so its not perfect yet, but it should work a lot better.
make sure you are running 1.3.19 ... several versions of 1.3.x up til that one have mouse movement issues... still might happen in 1.3.19 though so its not perfect yet, but it should work a lot better.