Left and Right side cursor movement causing problems
Moving the cursor to the left or right side of the screen causes the display to dim and the dock to enlarge showing open apps. Mountain Lion installed with all apps up to date. Bad enough with IMAC alone but I typically have two monitors and this is driving me nuts!!! Have turned off all Hot Corners and anything else that looks like it could have anything to do with the cursor movement short cuts.
Please help.
Thanks
iMac, Mac OS X (10.6.8)