Just came in to the debate, but from someone who in order of understanding can get by in: French (101% for Qc/Fr), English (99%), Spanish (50%), Czech (10%), Japanese (1%)...

I think the answer absolutely has to be yes! The problem as many have mentioned is fragmentation but as this community grow, if 100 _X_ speakers decide to split off, they'll be isolated away from this community.

Not to mention that most Nokia employees are probably not native English speakers to begin with and thus it would benefit them too...This question is amusing coming from a Finnish company. I guess we should really ask those who are can speak more than just English and even more those who can't speak English at all... :-)

But anyway, balancing growth, fragmentation and integration is the real issue here, not whether we should force a single language onto everyone on the Internet.

For the current size of the community i find it hard to justify a full blown area with the same sub categories for all languages, just not yet... A good idea might be to add a language field to the threads that would hash the name and color the threads accordingly/randomly(always the same for same language) so they would be easy to spot!
That would be a great start... When we grow to 10k online user at once, then we can revise how to split the forum to add languages in their own part.
Having other languages within easy reach of the "main" one will help exchange by simplifying work in every languages and since this forum is not just about support but also about sharing and coding i think it's very important to a FOSS community to be...

---
P.S. could the text box also be grown to something bigger than 6 lines by half the message width?! It's impossible to concentrate in such a small area! :-o