Hi, there might be something in this article that will help - AdwCleaner (link in article) is certainly worth a go.

Hi...I knew about that site ,just hav'nt tried anything from there untill today and it seems ADW Cleaner worked...Yesterday I saw a process in My Task Monitor called "Client.exe"...so I googled it and it came up as an extension file that can disable certain functions like "Proxy" and "Browsers"...so I ended it's process in Task manager and it fixed the problem temporaraly... but it showed up again to day...but after running the ADW Cleaner it has not showed up so far...this extension file was turning on the proxy settings on my computer...although my other browsers worked fine, I knew Firefox has issues with "Proxy" settings...so there...I hope that fixes this and helps others too...a down note is for some reason I lost my "Rocket Browser"...oh well...anyways thanks for any response!*john