Server side tests stopped

Hello,

This morning when I got into work, I noticed that last night at around 6:15 pm local time, the server side tests on Hobbit (conn, ssh, smtp, dns, etc.) stopped on all of the machines that my Hobbit server polls. When I restarted the Hobbit Daemon, the tests returned from Purple to green, but I do not know exactly what the problem was. On Monday of this week, I incrementally upgraded from 4.1.1 to 4.1.2 and then 4.1.2p1 and followed the Upgrade instructions along the way. Is there anything that I can do after the fact to find out what might have caused this to happen? I searched through the log files, and did not find anything that would indicate what might have been the problem.

Any help would be greatly appreciated.

Thanks,

Jeff