Hello, OK here is the problem, I have 4 types of client machines. Dell Optiplex GX110 desktop and tower, Dell Optiplex GX260 tower and Dell Optiplex GX270 desktop. All use intel video cards. When hooked up to the server all of them boot up the edubuntu bootsplash and loads. However neither of the GX110s proceed from there... they display a cursor in the top left hand screen that just blinks. while the other machines display the gdm edubuntu login screen. The thin client manager on the server only shows the non GX110 machines. I tried to edit the ltsp.conf by specifing: X_SERVER = auto, X_SERVER = i810, X_SERVER = vesa, X_SERVER = intel neither work, also tried : XDM_SERVER = <a href="http://192.168.0.254/" target="_blank">192.168.0.254</a> didnt work either, [Default] X_COLOR_DEPTH = 16 XSERVER = auto XDM_SERVER = <a href="http://192.168.0.254/" target="_blank"> 192.168.0.254</a> SCREEN_07 = startx SCREEN_02 = shell brought up an xserver grey window with a big X which then changed to rainbow colors.... the other Dells work perfectly!!! .... any help PLEASE!!!!