I have a 2009 Sony Vaio laptop upgraded to Windows 7. I have had Firefox as my browser for a long time, since before this computer. Today, Firefox prompted me tomupgrade to 3.something, with a suggestion to upgrade to Firefox 4.0. Unfortunately, i upgraded to 4.0. Now EVERYTHING is messed up. The browser is now completely messed up. I have lost all my toolbars with shortcuts, and Firefox keeps saying it is "currently offline." I can only get online with Internet Explorer which I hate. What is going on? HELP!!!!!