The preference bar (http://prefbar.mozdev.org) is a very handy extension for mozilla allowing you to quickly adopt your settings to some broken website designs (like user-agent filtering etc..) It would be nice, if it was part of the mozilla-firebird build, because XUL extensions cannot be installed on a per-user basis Reproducible: Always Steps to Reproduce: 1. 2. 3.
These days most XUL extensions can be installed in your profile directory on a per-user basis