Firebug FF extension won't upgrade with FF3.0

[David Rosenstrauch <darose@xxxxxxxxxx>]

Anyone else use the Firebug extension for Firefox?  Seems like the old 
version (1.05) isn't compatible with FF3.0.  But I'm also unable to 
upgrade to the new version (1.2.0b3).  The extension home page 
(https://addons.mozilla.org/en-US/firefox/addon/1843) tells me I need to 
upgrade Firefox to use the add-on.  Anyone know what's wrong and/or a 
workaround?

TIA,

DR