Unresponsive interface in slackware

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http://www.linuxquestions.org – I recently installed Slackware without a hitch, and to my dismay, even after successfully installing the proper Nvidia drivers, everything seems unresponsive and glitchy. For example, I am unable to change focus from window to window by clicking (90% of the things I try to click don't register) where the keyboard shortcuts work just fine. I've tried 4 different mouses to receive the same results each time. I thought at first it was just KDE, but I encountered the same errors occurred in wmaker, xfce, and fluxbox. Sometimes programs become unresponsive to any input at all. I've tried Googli (HowTos)