We (the Web Certain News & PR team) use Wordpress a lot and for different languages.

Nick Wilsdon will confirm that I have lots and lots of queries on this subject (sorry for all the questions Nick...)

We've just set up a multilingual PR forum and there is a thread set up to talk about Wordpress. I'd really appreciate it if you could visit http://www.multilingual-pr.com/ to share your expertise and queries... (needs sign-up to post)

Thanks in advance.