Force Firefox to quit.

1. CTRL + ALT + DLT
2. Start Task Manager
3. Click on the Processes tab
4. Find firefox.exe and select it, then click on End Process

Start Firefox again.

I found a solution to insure it never happens again. The trick is to edit your 'hosts' file (Windows users) and to include the following line;

127.0.0.1 serve.adquantics. com

Remove the letter space between the period and com when adding this line to your hosts file. I put the space there to prevent the link from being clickable, where it might send the reader to that website by accident.

What this does is tell your system to look to itself for anything from that website and because your system does not host those files the short story is that you won't be served any annoying garbage from them.

If you don't know where to find your hosts file then go here to learn all about it because for known sites that you want to avoid this is a great way to insure that you don't; http://www.mvps.org/winhelp2002/hosts.htm