Blank page when searching with Google

I've been a long time user of Firefox, ever since Netscape tanked, but this recent issue is starting to anoy me. When ever I do a search directly on the adress bar using Google I receive a blank page with no results. Sometimes the Google homepage doesn't even open and when it does, the page just freezes after I press enter to do the search. I've tried clearing the cookies and cache and playing arround with the privacy settings, no sucess. I have no extentions or any kindd of costumization in the browser. If I open any page typing the correct adress or use one of the other search engines everything works fine. I've instaled and uninstaled Firefox many times, different versions and languages, also with not sucess. I even reinstaled windows...

What's wrong?