I updated Firefox to v5.0 today, to discover after installation was done that the new version doesn't support the Google Toolbar, which is absolutely essential for my browsing activities. In other words, Firefox without the Google toolbar is completely worthless to me, so I'd rather go back to Firefox 4.x or just stick to IE. The problem is, the Mozilla web site doesn't provide links for downloading Firefox 4.x. Where do I get past versions of Firefox?