With a current SM en-US trunk nightly (tested on Windows and Linux): STR: 1. create a fresh profile 2. go to Preferences/Browser/Internet Search Expected: Something is selected, e.g. Google Actually: Nothing is selected. Observations: 1. browser.search.defaultenginename is set to "Google" by default (see about:config). If you change the status of the pref to "user set" (double click, OK), the drop-down in Preferences is set correctly. 2. browser-prefs.js contains: pref("browser.search.defaultenginename", "chrome://communicator-region/locale/region.properties"); / region.properties contains: browser.search.defaultenginename=Google / the same applies to Firefox (firefox.js, region.properties) 3. The code in pref-search.js (Services.search.defaultEngine.name) returns "Google" even in the default case.

Sorry, this bug didn't show up in my search-fu.