From what i can tell, it seems like its only effecting a few phrases that are stored in vbulletin and only the register.php file.
i havnt changed anything in months and the file it self has not been edited in any way.
http://www.esqchat.com/forum/register.php
thats the site that it is running on.
not sure when it happened but we havnt made any changes to the vbulletin side of the site in quite some time.
any ideas?