Not sure what's up with it now. A test was completed and returned to the server (and the web pages online reflect that), but immediately afterwards it can't connect to the same port to get the next test:
[2011-11-03 12:30:47 EDT] ESP: Returning work to server pgllr.mine.nu at port 9000
[2011-11-03 12:30:48 EDT] ESP: INFO: Test for 198677*2^2485227+1 was accepted
[2011-11-03 12:30:48 EDT] ESP: INFO: All 1 test results were accepted
[2011-11-03 12:30:48 EDT] Could not connect to any servers and no work is pending. Pausing 3 minutes
[2011-11-03 12:33:50 EDT] Could not connect to any servers and no work is pending. Pausing 3 minutes
Following that, I killed the process and restarted it, and it connected on the first try. The only thing I can think of is that I'm not running the latest PRP client (the download server is inop). I'm running 4.2.2.
EDIT: I had the exact same behavior on the other three instances, so either there's something funky with the port, or the old version of PRP I'm running doesn't play nice with the current server software.
I guess I'll bump up the count so it downloads 10 tests at once, and hope the download server is functioning by Saturday so I can download the latest client.
My lucky number is 75898524288+1