This chat is hosted at envolve.com so there must be some limit for total number of people in all chatrooms on all hosting sites. So if there are many people elsewhere (where this chat addon is used) you'll see 'The chat is full' message.
Ah, I see. Thank you for answering this question. All I got before was "Chat is from another place. Not our problem". Nice to get a real answer. Thanks again
"He was too absurd to make me angry. Indeed, it was a waste of energy, for if you were going to be angry with this man you would be angry all the time."