Whenever I start xorg my computer crashes. I am brought out to a black screen much like the one that it shows when I shut down my computer. After displaying this screen for awhile it kicks me out to the login screen. The same thing happens whenever I try to run Jetty or lightdm. Could it be a problem with my really really old crappy ati drivers? I know it's not a problem because of corrupted xubuntu files, because I just did a fresh install of xubuntu 13.04 about a month ago, and haven't tampered with it at all.