Found this article to be comparible to what I'm experiencing with my trackball (driver updated).
The curser tends to stick, or hesitate briefly, whenever the track ball has not been moved,
or the if the kepad has not been used for a while.
I have chosen not to update the Service Pack at this time, to avoid compounding
the glitch. (The last time I did such an update (different PC) lost access to viewing youtube videos).
The glitch began soon after updating Firefox and Adobe Flash.
Ran all the mentioned malware and virusware per this posted article, to clear up the curser hesitation. As a result, I cleaned out a slew of trashware, however the hesitant curser movment still persists.
What else can be done, short of restoring the OS to OEM?
Edited by Queen-Evie, 31 December 2014 - 02:27 PM.
split from http://www.bleepingcomputer.com/forums/t/519820/i-think-am-infected-with-malware-mouse-touch-pad-not-working/