I often come across PDFs containing Arial font (as reported by
pdffonts from
poppler-utils). For example, this one:
http://cdmrp.army.mil/funding/archive/10prmrpiira_pa.pdf
When I view these in acroread (8.1.7-0.1, lenny), I get some font that's
really horrible to read. The upper-case letters are about 4x taller
than the
lower-case letters.
I don't have Arial on my Lenny system, so I assume that another font
is being
substituted. I don't know how this works. By checking file-access
times, I
found that a very large number of font files are touched when I open
the PDF.
Files touched are, among other places, under
/etc/fonts
/usr/lib/Adobe/Reader8/Resource/Font
/usr/share/fonts
/usr/share/texmf/fonts