As for your problem, it sounds like an Exceed setting/problem to me.
It could be that exceed only likes a certain subset of the fonts
(proportional width arabic characters vs. mono-spaced ones); windows
and thus Exceed will use windows' TrueType fonts. My sugestion is
to see if you can use the same TrueType fonts on katoob as the ones
you have on your windows machine. If all else fails, contact hummingbird
about this since its a legit issue which they should include into their
FAQ or help database.
a little comment:
Katoob doesn't react with ttf directly like yudit "that's handled by gtk"
gtk can't find your fonts, Actually i don't have any experience with the Debian internals "failed to get a copy too ;)"
wish to help more, but i think Nadim did it 1st.