OK, I have no idea why but all of a sudden today my active screen corners stopped working, the magnification feature in the dock doesn't work (when I click on an icon it magnifies and then gets stuck in that position), and when I go into the toolbar it doesn't automatically highlight stuff for me --- for example when I'm in Safair, I click on Safari next to the Apple icon and go down to Services which is suppose to show me a menu to the right and it doesn't. I have to click on and hold for it to show me. Does anyone understand what I'm saying? I've restarted twice and I get everything back to normal for the first 2 seconds or so that the desktop shows. After that, everything I described above dies.