be aware there is a fake windows defender

[robinb]

you can check it out here

http://www.superantispyware.com/blog/

robin

 

[Randy Knobloch]

you can check it out here

http://www.superantispyware.com/blog/

Here, as well, Robin (among many others I Googled) >
http://www.bleepingcomputer.com/malware-removal/remove-windefender-2009