10.04 LTS - VNC Suddenly stops receiving Connections

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http://askubuntu.com – I have a fit PC that essentially runs just a subversion server and as a test server for web applications. I upgraded a while back to 10.04 LTS and no issues. I don't have any keyboard or monitor installed on it, I just access the desktop through VNC, and while a little slow, it works perfectly fine. Suddenly, today, I'm having an issue accessing Subversion. I tried to VNC to the machine, but it's refusing connections. I've SSH into the server and reboot, but still no dice. I can manage OK (usually) on my own with the desktop, but I don't use the terminal very often, so I'm kind of stuck (HowTos)