strange, because at first it stopped working for me, by not loading a server at all and causes the program to not respond (still does) and I thought it was a problem with Java or missing files or whatever, then someone told me they where having the same problem, then another, so I looked around popular xWom servers and it looked like only minecraft.net web client users were on.
Now I came back to one of the servers and yes, it seems people are using xWom again and most of them say they had no problems (this is an active community and there were 0 players online when I checked) anyways, I can't really find any error logs either...