Been having problems with my PS/2 mouse (Logitech Opitical) and sometimes it flip to the side or simply lock up. When it lock up, i had to unplug the mouse and plug it back in to work. I look under settings and see if there is options for mouse like hardware mouse, and there is none. I also checked mouse property and see if there hardware mouse enabled, there none either.

I dont know if the mouse is going out or there something wrong with my mouse. I didnt have this problems before, just started like couple weeks ago and i had this mouse for three or four years. Its a good mouse, not a cheap one though, believe i paid around forty dollars for it.

I did also check on Logitech Forum for details, none havent helped me with my problems.

Anyway i going to try out a cheap mouse, hated it because it doesnt feel right and have to press down hard to click.

That occurs only on gaming ???

Maybe a background program interferes whilst playing ???

Well i think that mouse is going bad or out, i put another mouse with PS/2 adaptor that was USB and this cheap ol mouse working just fine.

Hmm well, on a PS/2 mouse the 6-pin Mini-DIN connector could be sometimes problematic.

More or less, a USB mouse it a better choice...