Your home page may be the old, unmaintained, google.com/firefox. Change your home page to about:home and the notice should disappear.

This sounds like you are still using the old www.google.com/firefox/ homepage that is hosted by Google and is no longer used in Firefox since Firefox 4.0 or earlier. Google does not seem to maintaining that page anymore.

You can either ignore the message or change your homepage or use the now default about:home in "Tools->Options->General"

My Tools has no Options or General listed. I tried about: home, but it reverted to the Google home page. So thanks for the ideas, but they didn't solve the problem. Perhaps it's because I have a Mac?

See:

• https://support.mozilla.com/kb/How+to+set+the+home+page

nsigner wrote: My Tools has no Options or General listed

Whoops sorry as I missed that you are using a Mac and not Windows.

For Mac it is "Firefox->Preferences->General"

Tools->Options is Windows while Edit->Preferences is for Linux.

Thanks for the help. It's undoubtedly my error in not saying I'm a Mac user up front. I got there & chose return to default. Turns out that's where I have been all along. It's the Mozilla Firefox Start Page. But it includes this silly notice that I don't have the latest version of Firefox! Seems to me there's a bug (or whatever, I'm not real techy) in the basic design of the Firefox home page. Maybe it hasn't been updated for users of Lion?

The Firefox start page as in the old www.google.com/firefox/ or do you mean the new about:home

The about:home does not give the you are not up to date message.

(corrected a typo: firefrox - c)