Problems getting a WU, this box has been working for days

[markfw]

I have not touched the box since its been working for days, but all of a sudden, I get this:

03:35:38:WARNING:WU00:FS00:Failed to get assignment from 'assign-GPU.stanford.edu:8080': 10002: Received short response, expected 272 bytes, got 0
03:35:38:ERROR:WU00:FS00:Exception: Could not get an assignment

Help !

Edit: this is farther up in the log file:

02:50:07:Trying to access database...
02:50:07:Successfully acquired database lock
02:50:07:Enabled folding slot 00: READY gpu:0:\"GK110 [GeForce GTX 780 Ti]\"
02:50:07:WU00:FS00:Connecting to assign-GPU.stanford.edu:80
02:50:09:WARNING:WU00:FS00:Failed to get assignment from 'assign-GPU.stanford.edu:80': 10002: Received short response, expected 272 bytes, got 0
02:50:09:WU00:FS00:Connecting to assign-GPU.stanford.edu:8080
02:50:10:Server connection id=1 on 0.0.0.0:36330 from 127.0.0.1
02:50:11:WARNING:WU00:FS00:Failed to get assignment from 'assign-GPU.stanford.edu:8080': 10002: Received short response, expected 272 bytes, got 0
02:50:11:ERROR:WU00:FS00:Exception: Could not get an assignment
02:50:11:WU00:FS00:Connecting to assign-GPU.stanford.edu:80

[markfw]

It just got a unit, It was down for like 2 hours.

[kiore]

There were no GPU units for a few hours, but have a couple now.
But I was getting a server message you seem to be getting a drop out "short response" one.