Yesterday something happend to my clan's website that now makes a little Vdeck error window pop up everytime I go to a new page. Norton antivirus detects it as MHTMLRedir.Exploit, Here is the site for symantec's explanation. It changed some of the black to orange in the forums section. Here is the site, please take a look at it, hopefully somebody can tell me how to fix it http://www.everythingsgood.com/PHP-Nuke-6.8/html/index.php
I'd say someone's screwed with your nuke. Try downloading the latest rev of phpnuke.