Spark and iChat (on Mac OS X but not tiger)

I recently used the spark program to create a jabber account, and a jabber connection (@12jabber.com). Once I set it up, I was able to run the IM client using the built iChat on my computer. It worked great, but then it suddenly stopped functioning.

It said unable to connect, and i do not know the problem. the AIM on my iChat still works perfectly, but the jabber won’'t ‘‘connect’’.

help is appreciated

-Mareo Raft