pdf greek letter typos

Eduardo,

caused by a problem with font substitution in some version of
the poppler library which is uses by many LINUX PDF viewers. Try to
view the file in acrobat reader and possibly other viewers.

I'm running Ubuntu, and uninstalling package ttf-symbols-replacement did the 
trick for evionce & Co. on my system (acrobat reader was never affected; but 
used to show pdfs with transparency quite ugly - there was a discussion with 
solutions to both problems on the ggplot2 list last fall).

HTH,

Claudia

Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Universit? degli Studi di Trieste
Via Alfonso Valerio 6/a
I-34127 Trieste

phone: +39 0 40 5 58-37 68
email: cbeleites at units.it