Help!

My Avalon 4 Module has been humming away nicely. Overclocked at 350 on an OEM PSU.  Suddenly I am offline. 

I can connect wirelessly to Luci and rebooted the system to no avail.

My API log is this:

[Firmware Version] => 20131229
cgminer: 698d677
cgminer-openwrt-packages: aadd747+
luci: 346e3e7+
Socket connect failed: Connection refused

I am trying to connect to btcguild.

Any ideas?

Cheers,