Sounds to me like your computer resources are being used heavily somehow during the time when your touchpad acts up. Have you checked what background processes are running?
I was doing that at first, and not seeing too many programs running that I didn't recognize - seems like a normal background load (for what it's worth, as I am a beginner at this stuff) I stopped looking when it got to happening so much I just get disgusted and shut down. Also, I confess that along those lines, my hard drive is 500GB and there is 4GB RAM so I am not thinking about/expecting overload issues. Have I been assuming too much? Thanks for answering