Comment 4 for bug 559149

UPDATE/FYI:

On 'Ubuntu 10.04 LTS - the Lucid Lynx' w/ Firefox 3.6.3 and GNOME font smoothing OFF, I have successfully done the following to get fonts to appear in FF as they do on my GNOME desktop:

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sudo rm /etc/fonts/conf.d/10*
sudo dpkg-reconfigure fontconfig
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This was taken from here:
http://www.webupd8.org/2009/07/fix-fonts-in-firefox-35-and-ubuntu.html

It is a FF 3.5 hack but worked for 3.6.3. Setting up .fonts.config did NOT work for me and in fact I had to remove it after performing the above to get the fonts to appear properly.

Anyway, my system looks complete now and my Fonts OCD can subside :)

Cheers,