Changes are saved when you close Firefox completely, not just a tab.

If a change isn't getting saved, you probably have something installed which is changing the pref each time you start Firefox. You need to get rid of the cause, t00.

What is keyword.URL getting changed to?

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.com/kb/Safe+Mode

See also:

• http://kb.mozillazine.org/Preferences_not_saved
• https://support.mozilla.com/kb/Preferences+are+not+saved

I uninstalled firebug and Web developer and that worked for a few days, but today, it changed back. - I was notified when I opened Firefox that program called spigot tried to change my default search engine.

I am changing the Keyword URL data to Google search: http://www.google.com/search?ie=UTF-8&sourceid=navclient&gfns=1&q=

Thanks for the links - I will keep you posted...

I found the culprit - Freerip Toolbar by Spigot Inc. changes the Keyword Url line to Yahoo every time the PC boots up. Should be fine now. Many thanks for your assistance, folks.

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