My mouse lags slightly in operating system but barley enough to really cause a problem but in games its enough to become really irritating. Its just a complete lack of 'smoothness' rather than freezing up of any sort.
It always used to be perfect so its not a case of the games demands being too much for the laptop.
I've tried formatting with XP but that didn't solve the problem, currently I'm back in windows 7.
Tried a different mouse and experienced the same, I've tried with and without drivers as well - same problem.
As far as I can tell the touch pad isn't what it should be either.