500 Server Internal Error
This one is displayed occasionally but constantly after random or no-random page refresh on the web interface of version: 1.0.1-SNAPSHOT-07-01-2007 built on Sun Jan 7 18:51:58 EST 2007. After refresh the things goes OK, the problem is not blocking the interface for a long time.
Upgrade to a recent snapshot. How much RAM do you have?
2G, i think that it should be enough. there is no time for upgrade now, the whole network depends on this machine.