I did some quick debugging of the Cowboy server code, fixed some bugs and replaced a missing file.
It seems to be working again after a day or two down time. Your stats here on Cowboy should come back to normal over the next few days/weeks. The outage will not affect your cracking rate on DNET.
We now have an overclocked Intel Core 2 Quad, water cooled stats server. 
Click here for some photos.
Kevin