WP pages suddenly stopped loading

Hi there,

Something happened on my server and suddenly two of my WP sites stopped working (at exact same time).

The site is:
http://babesinpoker.com/

And I can access the FTP fine, and any static page loads fine, but any page with WP code it just fails to load. No error messages, just a blank white page!

Using the FTP I navigated to the WP admin. I can see this file on the FTP, but when I goto it again just a blank white page, you can try for yourself:

http://babesinpoker.com/blog/wp-admin/admin.php

Any ideas on the source of the problem? What would you recommend?

I contacted my host, but unfortunately they’re not very helpful so far – they did mention that some recent security changes may affect WordPress sites on the server.

Please post any tips or solutions, thanks!