This only happens on my work computer, running XP 32-bit OS. When I scroll using either the mouse wheel or the side scroll bar the website I am on cuts in and out of displaying. Some points on the scroll bar has everything displayed, some points the window is all black, and at other points only some of the text or pictures are displayed. When I hover over any link or picture they load while the rest of the page remains black. This problem happens on many websites including Wikipedia and Google, however, there are certain webpages that I can't seem to recreate this issue. The Firefox tab and url bar always display even when the webpage is black.