I didn't pay the filestore72 much mind either, assuming I clicked on the wrong link or something for quite some time. However, since we can now duplicate it every time on multiple operating systems and browsers after clearing the cache, it now does not seem likely related to a server load issue.

Should be possible to track down since we can duplicate with consistency. A tougher find would be if it was intermittent.

There are about a thousand posts related to infostore72.info redirect vbulletin - sounds like we are in good company:
http://www.google.com/#sclient=psy-a...ogle+vbulletin