New Registration Problem
 

This is unusual and perplexing... (3.8.5)

One of my forums, (www.forabodiesonly.com) all of a sudden, stopped allowing registrations.

Here is what happens. When a new user tries to register, it wont accept any text entry in the username field. It gives a message "Please complete the required field "username""

I've tried everything. Using the default vB skin, disabling all hacks & plugins, reverting templates, reuploading register.php, disabling ajax, everything I can think of.

It worked fine until sometime after 2:00pm yesterday. Its also only on one of my forums, the other forums on this server register just fine.

Anyone have ideas as to what might be causing this?