Facebook hijacked my homepage in Firefox, problems after installing Avast.

Hey guys,

I was wondering if someone could help me out, i posted my problem a while back, you can view the link:
[u]
http://forum.avast.com/index.php?topic=78331.msg652089#msg652089[/u]

I had a member helping me out but they didnt return with further advice, probably because i was replying a little late to his messages because of work.

I hope someone might be able to help me if i run combofix and attach the report?

thanks

Sereena

sorry, I just forgot :-[