You have quite a few extensions that sound as though they might be responsible for this. Try this:

Disable ALL nonessential or unrecognized extensions on the Add-ons page. Either:

• Ctrl+Shift+a
• orange Firefox button (or Tools menu) > Add-ons

In the left column, click Extensions. Then, if in doubt, disable.

Usually a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step. But hold off on restarting for a moment until checking this second issue:

There is a user.js file in your settings folder. This file will override your settings when you next start Firefox. You may need to get rid of it. This article has the steps for that: How to fix preferences that won't save.

Note: if you do not see file extensions like .js, .zip, and others when viewing your Firefox settings files, Windows may be set to hide them from you. To work accurately with files, it would be better to show them. This article has the method: http://support.microsoft.com/kb/865219.

Any improvement?

Thank you so much!!! That was such a simple thing to do. I uninstalled the programs in the control panel and didn't know I had to do it anywhere else.