Firefox 10 Context Menu: Inspect Element versus Inspect Element with Firebug

If you use Firebug and find yourself wanting to inspect an element in Firefox 10 or higher only to be surprised by a dark modal background and breadcrumb trail that looks (and functions) considerably different than the one you're used to seeing when inspecting an element in Firebug...

...there is a work-around for removing the option from the context menu leaving only the usual "Inspect Element with Firebug" at the bottom; see http://jamesroberts.name/blog/2012/02/07/disable-firefox-native-inspect-element-context-menu/ for details.