We´re running Version 5.0.11_GA_2695.UBUNTU8_64.NETWORK 17 nov 2008 and have found a bug.
If we have 2 domains. One containing the Swedish characters åäö and one not containing those characters. Then its not possible to move an account from the domain without åäö to the one with åäö. It is possible to create new users in the åäö domain and also move user from åäö to the domain without åäö (but not back again).
The error message when editing an account and trying to move it into åäö is "invalid account name" (but in Swedish)