Firefox & Thunderbird fonts

[Keith Powell]

I have just downloaded the latest upgrades for my Dapper Flight5, and I
now have a problem with fonts in Firefox and Thunderbird.

The "body" fonts in both programs are now *very* small serif and I can
hardly read them. Headers, message lists, etc, are still as they were
before. In fact, I am having some difficulty in seeing what I am typing!

All font settings are as they were and I cannot find any way of making
the body fonts larger and sans-serif.

Just to repeat, I have checked the system font settings and the font
settings in Firefox and Thunderbird, and they are exactly the same as
they were before.

Has anyone any suggestions, please? I can't find anything in the archives.

Many thanks

Keith