What steps will reproduce the problem?
0. With any firebug newer than 1.4.2, try the following
1. Install Jetpack (https://jetpack.mozillalabs.com/install.html)
2. Go to about:jetpack
3. Go to "Tutorial" tab
4. In the Chapter 1 section, go for the third example, this is the one that
interacts with firebug
5. Click on the code, the jetpack should get temporarily installed (A
"Boom!" text should appear in the status bar).
6. Activate Firebug
7. Click on the "Boom!" Text


What is the expected result? What do you see instead?

The expected result is that the current jetpack.tabs object to be logged
into firebug's console. jetpack.tabs is the collection of the opened tabs,
to which jetpack has access.

What I see is nothing logged, instead of going to the firebug's console,
all the logging goes to the Firefox Error Console.

Which version of Firebug? (more specific than latest please):

With any Firebug version newer than 1.4.2

Which version of Firefox?
Reproduced in 3.5.4 & 3.5.5 (although this is not important, I think)

On what operating system?
Reproduced on Linux and Windows

I think that somewhere between the 1.4.2 and 1.4.3 an issue regarding the
"about:" pages was fixed so that firebug didn't enabled in any webpage
starting with "about:". In jetpack, all the logging is done exclusively
through "about:jetpack". 

You have to switch to that tab to see the logging, but since firebug doesnt
enable in those pages, jetpack doesn't see the console object. Sure you can
enable firebug once you loaded the page, but then is too late for Jetpack
to have it in it's scope I think.

So maybe doing some exception just for about:jetpack so that Firebug could
be enabled there may easily fix this.

Hernán