With evolution 1.4.4, evolution tries to use "Helvetica" for
the for the font for the footeres when printing.

However, most systems won't have that on a system font,
and libgnomeprint has a very crude ability to do fallbacks;
it ends up picking the alphabetically first font on the
system, which can be anything:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=79271

It's easy to make gnome-print do a bit better:

http://bugzilla.gnome.org/show_bug.cgi?id=120954

But it would be good if Evolution would, when it wants a
generic sans-serif font, use "Sans Regular" rather than
"Helvetica".