HowTo: Specify Web Browser Preference for Thunderbird 3.1
In previous versions of the Thunderbird mail reader, you had to manually edit the prefs.js file and add lines such as:
user_pref("network.protocol-handler.app.ftp", "/usr/bin/sensible-browser"); user_pref("network.protocol-handler.app.http", "/usr/bin/sensible-browser"); user_pref("network.protocol-handler.app.https", "/usr/bin/sensible-browser");
With Thunderbird 3.1 that no longer works. Even worse, when my properties were migrated over, I didn't have any way to change the browser (it was defaulting to Firefox).
To fix, do: Edit -> Preferences -> Advanced -> Config Editor
In the properties window filter on "warn-external". Set all the items to "true".
Next time you click on a link, you will be prompted to select your web browser. (Hint: for Debian and variants such as Ubuntu, you want to pick "/usr/bin/sensible-browser". If that fails to launch the browser you want, then fix your preferences in the control center.)