Setup went fine and was working OK yesterday afternoon - however this morning no sign of the chat window (in all browsers)
I have tried all the trouble shooting tip both here and in the documentation but still no joy.
Any suggestions welcome....

Server details:
PHP Version 5.3.10-1ubuntu3.5
Web Server Apache/2.2.22 (Ubuntu)
WebServer to PHP Interface cgi-fcgi
Joomla! Version Joomla! 2.5.9 Stable [ Ember ] 4-February-2013 14:00 GMT

I had the same ...
Did you maeby add some add-ons or plugins using Jquery after the chat worked ?
I did install easyjqeury and for some reason the chat was gone ... So i think you have a conflict in jqeury versioning

I had the same ...
Did you maeby add some add-ons or plugins using Jquery after the chat worked ?
I did install easyjqeury and for some reason the chat was gone ... So i think you have a conflict in jqeury versioning

Nothing added since that uses jquery as far as I am aware.
Strange thing is I reinstall and it works again before it disappears after about 24 hours

If its a jquery conflict issue , please enable the option " remove jquery conflicts " in freichat backend