Strange issue. One of the fonts affected is raavi.ttf which came with
Windows. This is happining on three different PCs. One is basically a
clean Windows install. The other is our graphics guy whi installs fonts
all over the place, literally thousands. The third is another PC that is
just used by the receptionist - she doesn't do anything - no priveledges
to install or screw with the system.
Certain fonts simply appear as blocks. I tried replacing the font files
and it still does it.