I FTP’s my blog site to my local drive and scanned it with McAfee.
It found the following trojans:
Exploit-MS06-014 in the INDEX.PHP in the root directory
PHP/BackDoor.gen in a INDEX.PHP in the wp-contents directory
BackDoor-CUS!php in a file called mohtram.php
I am not sure how ‘they’ succeeded to place these files, but they certainly were used to mess up my blog.
Thanks for the reply Samboll