https://listman.redhat.com/archives/phoebe-list/2003-February/msg01457.html
<snip>
> Warning: charset "UTF-8" not supported, using "ISO8859-1".
One way to get it to work is to edit /usr/local/Acrobat5/bin/acroread
and add near the beginning of the file (i.e., just after the "ver" and
"install" lines):
LANG=en_us
export LANG
This is the way to go, since it works system-wide. The long-term
solution is for Adobe to FIX ACROREAD - either so that it doesn't crash
on utf8 locales, or at least so that it's shipped to reset the locale
before launching. They've had a KB article on this issue since at least
5.0.5 :-(
Craig Ringer