Hello,

As many comments have noted, the default fonts included with rockbox don't work so well with the larger screens on our n900.

I've converted and resized the font sazanami-gothic to be useful on rockbox for the n900. Specifcally I picked this font due to the fact that it correctly displays CJK characters while looking crisp at smaller font sizes.

Download here:
http://f.xn0.org/18-sazanami-gothic.zip

To install:
Close rockbox if it is running.
unzip and move "18-sazanami-gothic.fnt" to the directoy "/opt/rockbox/share/rockbox/fonts/"
Start rockbox and go to Settings > Theme Settings > Font and select 18-sazanami-gothic.
Done.