The title here pretty much says it all. I've been noticing that my trackpad has been really slow,aka the pointer speed is REALLY low and I don't want to use acceleration. Today I plugged in a USB mouse and I still had the same problem.

I tried changing the settings in System->Preferences->mouse but the slider there seems to be non functional, acceleration option works but not the sensitivity.

It's a macbook (not pro) 7,1.

Any advice?