We just detected (via our scanner) that the Nagios community site (community.nagios.org) has been hacked and is redirecting to a Viagra site. The results vary depending on the page request.
If you try to visit any page and add a “order=X” in the query you will be redirected. Example:
$ lynx –head –dump http://community.nagios.org/?order=1
HTTP/1.1 302 Found
Date: Tue, 13 Jul 2010 02:54:37 GMT
Server: Apache/2.2.3 (CentOS)
Location: http://the pharmacy discount.com/item.php?id=1095&said=m111
It looks like a .htaccess redirection, but it might be something else. They are using an old version of WordPress, which may explain the compromise. We recommend people stay way from the site until it gets fixed.