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:

[snip]

Do you have an idea what might be going on with this?

Thank you.

[edited by: phranque at 2:21 pm (utc) on Jun 7, 2013]
[edit reason] no pastebin urls please [/edit]