I was screen sharing to a OS X 10.5.8 Server and hit Log Out. From there, it went to a light-blue screen with a black mouse pointer, and now I can't log back in! How do I get back on to Screen Share without having to reboot the server? It's a file server and all of the files are still accessible, so the server is definitely still up and running, just can't screen share.
SnapOverflow
Can you log into it via ssh and check the running processes? There should be a screen share process or something of that nature that you can then kill -9.
Might be something in the logs under /var/log that can give a clue as well.