I have been experiencing some strange behaivior with my SwirlChat installation lately.  It's installed and working most of the time.  But we've been holding weekly chats and can see about ten or more users at a time.  It seems like after a while people can't post anymore...or rather they post but it doesn't show up in the chat.  Then posts begin to repeat themselves.  Last week an entire block of chat kept repeating in big chunks over and over. 

I love the module but two weeks in a row on a small but growing community site where users are already nervious about chatting online is a bummer. 

What do I do now?