Firefox 3.51 released to correct critical JS vulnerability
As an exploit has been recently created, it's important for all users to update to the later versions. Most folks will autoupdate and they should accept these changes right away
Firefox 3.51 released to correct critical JS vulnerability
http://isc.sans.org/diary.html?storyid=6817
http://blog.mozilla.com/security/2009/07/14/critical-javascript-vulnerability-in-firefox-35/
http://en-us.www.mozilla.com/en-US/firefox/3.5/releasenotes/
http://www.mozilla.org/security/announce/2009/mfsa2009-41.html
QUOTE: If you are a Firefox 3.5 user, update now. And remember, if you applied the work around by disabling the JIT in about:config, remember to turn it back on!