In a previous post I've talked about a bug affecting the ttf-dejavu package; I've extended the test to all font files in the Debian archive and come up with the following numbers: of the 192 packages containg at least one TrueType font file, 74 are affected by the digits width problem for a total of 672 ttf files.
Result are available here
The bug can be reproduced with pango-view (ttf-tmuni was chosen in this example):
perl -e 'for my $i (0..9){print "$i" x 80; print "\n";}' > sample.txt
pango-view --font="Tibetan Machine Uni" --waterfall --dpi=72 -q -o out.png sample.txt
Comments are welcome before I start filing the bugreports