I am now using ratpoison as a window manager on my mythtv frontend. I saved myself some ram managed to shave a few seconds from boot to ui. Here is my .xsession.
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#!/bin/bash
#xfwm4&
ratpoison -c focus&
#xterm &
mythwelcome
I also added VideoModeLin = 3 to the ~/.zsnes/zsnesl.cfg of the mythtv user in order to get the image centered and stable on my tube.