You can see if your Firefox is up to date by going to help> About Firefox. Click check for updates.

You appear to be on the beta update channel and have a Firefox 24 beta version.

You can try the current release version (Firefox 23) to see if that version crashes as well.

You can find the full version of the latest Firefox 23.0 release in all languages and for all Operating Systems here:

• http://www.mozilla.org/en-US/firefox/all.html