I just installed the latest version of Firefox as well as the latest version of my graphics card drivers, and Adobe Flash Player. When I open Facebook, I get black boxes and lines all over the left side of the screen where my chat contacts are. I am wondering why this is happening and if there is a current fix to it, as it is rather annoying. When I hover my mouse next to or over the black boxes and lines, they move and continue to pop up elsewhere but only on the friends/chat area.