Internet search problem

[deathville]

Ok I'm having a problem with Firefox. When I search something on google and click it, it always reroutes me to a different, random site. What's going on? Do I have a virus or something? With Mcafee and Spybot-Search & Destroy i don't find anything, which is odd. And google chrome works just fine. I even tried uninstalling firefox and installing it again, but to no avail.

Any idea what's going on here?

 

[Ste]

Download, update and run a full scan of malwarebytes, run the scan in safe mode.

 

[deathville]

Download, update and run a full scan of malwarebytes, run the scan in safe mode.

Ok I did that. It came up with a whole bunch of stuff which was quarantined and deleted. After restarting, I tried it again. The problem's still there.

 

[Ste]

Post a hijackthis log next.