After updating my fire fox to 3.6.3 I now cannot click on links into a new tab it will just open a blank tab, after hitting refresh, nothing happens. But when clicking bookmark link it will open in new tab as wanted but will not load unless I re-click it a second time. Clicking links normally will load page. Entering a URL like www.yahoo.com will not load either. To get to this page I had to a search engine like yahoo and type in fire fox website and it from there.