var yuipath = 'clientscript/yui';
var yuicombopath = '';
var remoteyui = false;
else // Load Rest of YUI remotely (where possible)
var yuipath = 'http://yui.yahooapis.com/2.9.0/build';
var yuicombopath = 'http://yui.yahooapis.com/combo';
var remoteyui = true;
Seriously, I've read other strange things happening to people; though yours is the most obnoxious I've heard of.
This arcade was created by someone else, and many vbulletin liscence owners (hi) like to take setups like this one and install it on our forums. If there are bugs, it's up to him to fix them eventually. So while I'm sorry that doesn't help anybody, at least you know that we see it too, and I wish we could fix it right away but it can't be done as far as I know. Hopefully in the future we'll learn of an updated version of the arcade that fixes these issues. To the best of my knowledge, this arcade is one that's still supported by its maker, so I expect that to happen eventually.