Works as advertised Rated 5 out of 5 stars
This Extension brings back the stock statusbar functions of Firefox 1.0 - 3.6.* and then some, by providing a UI architecture to show link targets in the URLbar and status of current-page elements in the Add-on Bar. The URL progress bar this Extension replaces that of the zeniko Extension Fission (last used with Firefox 3.6.*, as of 17 April 2011), and a separate download progressbar is available.
I have tested it with the Frank Yan Extension Tab Progress Bar, the Devon Jensen Extension Download Statusbar, and the Strahinja Kustudić Extension Extended Statusbar, and have found no mutual interference problems.