A while ago you may have noticed that AMDUsers.com was hacked, twice.

I've done a little bit of investigating.

These sites have also been hacked by "spofs"

http://www.dharmahealing.org
http://www.engineers-international.com/

Apparently there was a flaw that allowed people to add administrators to the site.

Read more about it here

http://phpnuke.org/modules.php?name=...ighlight=spofs

I also recommend anyone using PHPNuke to visit here for the fix:

http://www.nukeresources.com/article-620--0-0.html