Well my wordpress blogs were infected by some sort of exploit that allows hacker write files to my server and redirect traffic. It's really recommend to check your server for this shit+ upgrade to WP 2.51 asp! Here is handy tool I made to detect infected files + mysql database rows and remove this shit.
1) download tool here:
http://64.15.156.39/remove_exploit.zip
2) download remove_exploit.zip -> unzip -> upload to your server
3) edit remove_exploit.php configuration part
4) login to your server via ssh
5) chdir to location where remove_exploit.php is located
5) run the tool: php remove_exploit.php
notice: you must be logged as user who has rights to the files ('root' will work for sure)
WARNING: USE THIS TOOL ON YOUR OWN RISK
