I got the latest version of Firefox, version 6.02, and everything seemed rosy. The one change I immediately saw was the menus went away, and I no longer could find "View Source." For a developer that would cause you to switch browsers. Fortunately, I saw it in a much better place on my Web Development toolbar. Now its much easier to use. And it turned out the Menu Bar was switched off in the new version.
The next thing that happened is Microsoft came out with a new Windows Update (KB982217) to Windows 7. What I found was Micrsoft hijacked my normal search engine, Google, and substituted Bing. When you first load your browser, if you have the home page set for your search engine, Google for example, it will load and everything seems OK. However, if you open another tab, you get the Bing search engine. Pretty sneaky. If any one else would have done this it would have been called malware, but since Microsoft did it, everything is OK, NOT!
The normal way to get rid of browser hijackers is to go to, in the case of Firefox 6, the upper left Firefox icon, and click on the options menu in the right sidebar, and change your Home page back to the correct URL. In this case that's not going to work.
Another way to get rid of a toolbar is to right click on the upper tool bars in the browser window, and un-check it, but this also does not get rid of the Bing Search bar from your tab window, hmm.
The culprit is the "StartNow" toolbar, which Microsoft, in its attempt to push the Bing search engine, installed as part of its update. Thanks for nothing, Microsoft. You do remember that Microsoft got caught with its hand in the cookie jar by Google, because they used Google search results for Bing search results. Can you hear I'm irritated that Microsoft did this. It's taking time out of my day to put my browser back the way I want it.
In Firefox 6, go to the upper left Firefox icon (this will only appear if your Menu Bar is turned off, if your menu bar is turned-on, go to Tools > Add-ons). Go to the Add-ons in the right menu, click Extensions and remove the StartNow toolbar. Close your browser and reopen it. Presto, Bing goes away on new tab pages. But there is a lingering problem, and that is, you get a blank page when you open a new tab window.
If you want your tab page to be your home page, you'll need to download an add-on to Firefox 6, the "NewTabURL" plugin. Click on "Add to Firefox."
You need to configure the plug-in, click on "More" and then "Options" in the Plug-in Description. When the options menu opens, click on "Home Page," then "Save", and your all set. Close Firefox, re-start it, and open a new tab window. WahLah! Your home page now opens in each new tab page.