WordPress MU

I am a current user of regular WP and am looking to move on to WPMU, but want to know if anyone is using qtranslate in a bilingual or multilingual environment with MU. It is an excellent plugin and I use with Mandigo Theme.
I am planning to have no more than 30 sub blogs and want bloggers to be able to see dual language choices within the UI.

Hello, I'm using, this is a great plugin, but I don't know why, in some blogs when I try to enter in the WP-ADMIN it return 404 error...