Ubuntu Firefox/Shiretoko 3.5 and User Agent string

I installed the firefox-3.5 package in Jaunty and found that the facebook chat applet on their page stopped working. It seemed to think I was running an outdated browser. A quick google search came up with a result: http://rrenomeron.wordpress.com/2009/07/07/ubuntus-firefox-3-5-and-facebook-chat/

I could’ve installed the addon, but there’s an easy, simpler way:

1. Type about:config in the browser url bar
2. Type useragent into the filter bar
3. Edit the general.useragent.extra.firefox and change Shiretoko to Firefox, leaving the rest of the value the same