I looked at most of the FAQ's and a number of forums, but could not find anything relevant to my problem. Using a PS/2 mouse, but I get pointer/cursor trails on the desktop and on open program windows. They go away if I refresh the desktop, but in open windows they may go away if I open a menu item, then again they may not. In OO the cursor leaves "black" marks all over the page, especially if I try to do any editing. If I open a menu item (such as <Edit-Select All>), the little black boxes disappear, most of the time. Other than that, Knoppix from the CD works great on my system, having configured, sound, video, network, etc. settings correctly. Any help would be greatly appreciated.