At least I can't reproduce this problem anymore – see bug 775648. The patched kernel from the natty-proposed repository solved the problem for me.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/700292 Title: Bluetooth keyboard after natty upgrade not working -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs