This can't be bug 776490 because we pick that up by default - its shared code.
Dirk, have you tried reproducing this in Firefox? I think this might actually be the answer to the issue:
http://mike.kaply.com/2012/08/01/major-change-setting-default-preferences-for-firefox-14/
You need to place syspref.js into /usr/lib/thunderbird/defaults/preferences/ (not pref)
This can't be bug 776490 because we pick that up by default - its shared code.
Dirk, have you tried reproducing this in Firefox? I think this might actually be the answer to the issue:
http:// mike.kaply. com/2012/ 08/01/major- change- setting- default- preferences- for-firefox- 14/
You need to place syspref.js into /usr/lib/ thunderbird/ defaults/ preferences/ (not pref)