I just spent a couple of hours configuring /etc/X11/xorg.conf
I have a small Ubuntu machine in my home configured as a media server. It's currently my music server running squeezecenter. I have had Asterisk running on it, but that's not working at the moment. I've been frustrated that when ever I reboot the computer then two annoying things happen. Firstly, the DNS config settings are lost and I have to reset them. Secondly, due to no monitor, VNC starts up at a resolution of 640x480. I fixed the second issue by reading through this post. I'm about to start looking at the first issue.