Over the past few days I have started experiencing multiple server crashes per day. I have turned on all the debug logging in teamcity-server-log4j.xml, but that has not produced any helpful messages/stacktraces in the log files when the server crashes. I also tried increasing the heap size from 512m to 768m. The Java process just dies, and users see a 500 error message when trying to access TeamCity. I am running TC 4.5.4 (9071) on Mac OS X Server 10.5.8. Is there anything I can try to debug/fix this problem? Any clues would be appreciated.