Hi all,
well, problem solved.
I found this doc:
http://lists.suse.com/archives/suse-oracle/2001-Oct/0172.html
and it tells you to unset LANG (which I believe was in some of the installation docs, you can definitely find it here:
http://server.ccl.net/cca/software/UNIX/oracle/RH7.0/copies/oracle-install.shtml)
Basically, you need to go edit your .bash_profile and the up script for Aolserver and unset LANG. Just removing it probably won't work, as LANG could be set somewhere else by the o/s.
Restart AOLServer, drop and recreate your user, and restart the install.
Anyway, that's the solution to that problem in case anyone else gets it.
Cheers,
Kevin