Embarassed!

Hi, I have an internet connection at home, and we use it at least 12 hours a day. THE PROBLEM: the problem is when i am connected to the internet, some random website automatically open up in Internet explorer, The websites are : www.limewirextreme.com/1,www.limewirextreme.com/2,www.limewirextreme.com/3,Even www.adultfriendfinder.com Which has been causing extreme embarrassment to me, because i have me , my 15 year old son, and my wife using the internet. And we don't even use any other web browser except Firefox whereas the popups open in internet explorer. I would be grateful to you people if i am provided with a solution. Thanks in advance.

Hello and welcome to the forum. Sorry about the delay in responding If you still need help, Scan again with HijackThis, and copy/paste" a new log file into this thread. Also please describe how your computer behaves at the moment.