Deadbug 2.0
I'm pleased to announce Deadbug 2.0 is now available, with support for Firebug 1.7 and Firefox 4.0.
When Firebug is turned completely off, Deadbug replaces the normal Firebug icon with an upside-down, 'dead' bug icon ( designed by Kara Rawson). But Firefox 4.0 removed that status bar in favor of an add-on bar which is not visible by default. So Firebug 1.7 (which supports Firefox 4.0) added a Firebug icon to the toolbar, which you can read more about on Honza's excellent blog.
The good news is that this new version will work with both the toolbar icon and add-on bar icon. You can download it here, or get the source from github here.