On Sat, 02 Dec 2006 16:47:59 -0600 Michael Satterwhite <michael@xxxxxxxxxxx> wrote: > Can anyone offer any suggestions? Is it an ATI video card? Various people have reported mysterious signal problems with some ATI cards (me included). I made my problems disappear by forcing X to use a lower refresh rate (which is not easy - for the complete tale of the quest for lower refresh rates read: http://home.att.net/~Tom.Horsley/easy-linux.html :-).