Making firefox the default browser

[Tim Johnson]

Hi:
I just installed gutsy, replacing feisty.
 (Is that two of the seven dwarfs?)
Can't seem to make firefox my default browser.

Example
tim at bart:~$ sudo update-alternatives --config x-www-browser

There are 2 alternatives which provide `x-www-browser'.

  Selection    Alternative
-----------------------------------------------
 +        1    /usr/bin/konqueror
*         2    /usr/bin/firefox
## Looks like firefox is the default browser.
But
If I highlight the name of a html file in MC and
hit enter, konqueror loads the file.

In feisty with similar configuration, firefox would load, or
if firefox was already running, open the document in
a new tab.

Anyone know what else I need to do.
Thanks
Tim