I dont know if this was also affected from mambo vulnerability. refer to:
http://secunia.com/advisories/17622/
I have lot of joomla/mambo website in different version... the only website that is fine right now is the mambo v.4.5.1 but all from mambo v.4.5.2 till joomla 1.8 were affected.
I didnt edit the configuration... I just visit the site to update some contents but all I got is error... the same as the others...