I have a network of 50+ Wordpress blogs, which is based on 10 different themes. When I go to some of the urls they are not loading css code of a theme, and there is a huge chunk of code on the top of a website, which look something like this: http://pastebin.com/inBp6K5v Do you have an idea what might be going on with this? Thank you.
Looks to me like someone's hijacking your sites... I recognized some Mysql database commands in there. I'd change passwords, update all your Wordpress & plugins... and remove that code...