Strange Behavior When Opening Topic

[kreemoweet]

Several times, I tried to open the MozillaZine topic http://forums.mozillazine.org/viewtopic ... &t=2998223

When I do, I get an "Authorization Required" dialog box, on top of the topic display. It's saying that "http://www.ordernsystems.com" is saying "page is not currently available", and
has text boxes for entering username and password.
Kinda bizarre. Never been there or heard of it. Clicking the the box close-window X makes it go away.

[barbaz]

It's the image included by the OP of that thread.

[trolly]

Image deactivated.