Comment 15 for bug 328672

So it looks like there's no workaround for this at all? I don't have theming enabled, and it still won't let me change the font sizes at all for the message list. I seem to have wrangled the folder list to respect a smaller font, but can't easily reproduce.

Aside - I've just been forcibly pushed into KDE4.2, and am finding lots of these kinds of surprises (one reason I reverted to 3.5.x about 6 months ago after experimenting with 4.x). I suspect we'll see quite a few new followers of these bugs over the next few weeks, as Debian has just dropped KDE 4.2 into their unstable branch.