Hey Leanne,
I'm not sure where the problem is coming from. I have one suggestion - go to the backend -> components-> compojoom comment-> edit the settings and save them (you don't have to change anything - just edit and save).
If this doesn't help then it is most probably related to the fact that your page is makign a lot of js errors.
MooTools.upgradeLog is not a function
[Break On This Error] var MooTools={version:"1.2.4",build:"0..."::")[1]);b.set("title","")}})}})})();
mootools.js (line 1)
syntax error
[Break On This Error] Window.onDomReady(function(){new TPMen...assName+=" sfhover"};a[b].onmouseout=f
menu2....easeOut (line 1)
MooTools.upgradeLog is not a function
[Break On This Error] var MooTools={version:"1.2.4",build:"0..."::")[1]);b.set("title","")}})}})})();
mootools.js (line 1)
MooTools.upgradeLog is not a function
[Break On This Error] var MooTools={version:"1.2.4",build:"0..."::")[1]);b.set("title","")}})}})})();
mootools.js (line 1)
MooTools.upgradeLog is not a function
[Break On This Error] var MooTools={version:"1.2.4",build:"0..."::")[1]);b.set("title","")}})}})})();
mootools.js (line 1)
MooTools.upgradeLog is not a function
[Break On This Error] var MooTools={version:"1.2.4",build:"0..."::")[1]);b.set("title","")}})}})})();
mootools.js (line 1)
MooTools.upgradeLog is not a function
[Break On This Error] var MooTools={version:"1.2.4",build:"0..."::")[1]);b.set("title","")}})}})})();
This errors are not generated by compojoomcomment, but they could be the cause of your problems.
Do you have the mootools upgrade plugin turned on? Perhaps turn it off and look if the page still loads.
Daniel