Comment 164 for bug 67226

I had the same problem in Firefox, Galeon or Konqueror in Ubuntu Studio 9.10, 64bit, fresh install.

After reading all the replies I came up with a solution that works, in my case, and based on the suggestion by Jean-Philippe Fleury:

My /.fonts.conf looked like this:

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
    <match target="font" >
        <edit mode="assign" name="rgba" >
            <const>none</const>
        </edit>
    </match>
    <match target="font" >
        <edit mode="assign" name="hinting" >
            <bool>true</bool>
        </edit>
    </match>
    <match target="font" >
        <edit mode="assign" name="hintstyle" >
            <const>hintfull</const>
        </edit>
    </match>
    <match target="font" >
        <edit mode="assign" name="antialias" >
            <bool>true</bool>
        </edit>
    </match>
    <dir>/home/jack/.fontmatrix</dir>
</fontconfig>

After deleting:

    <match target="font" >
        <edit mode="assign" name="hintstyle" >
            <const>hintfull</const>
        </edit>
    </match>

everything seems to be fixed.
Nevertheless I hope this will be fixed with an update soon, for all those not used to spend hours and hours fixing it (or worse, leave Ubuntu behind and moving back to Windows... Arghhhhh)