OpenACS version 5.0 will support Unicode.
The target release date for 5.0 and .LRN 2.0 is November (.LRN is an E-Learning application based on the OpenACS toolkit).
We have a translation server running pre-alpha 5.0 code up here: http://translate.openacs.org
Unless you want to help with translation it would be best to take a look on the testing servers. You can log onto the testing servers to try out the translation features:
http://dotlrn.collaboraid.biz/test/
Pick the admin link for oracle and go here:
http://dotlrn20-test.collaboraid.net/acs-lang/admin/
These servers are reinstalled once every 360 degrees of rotation.