[RCD] mysql users case

Hi,

I have a question about users: I noticed I have different users filed under users mysql table. This happens because of this options in configuration:

// automatically create a new Roundcube user when log-in the first time. // a new user will be created once the IMAP login succeeds. // set to false if only registered users can use this service $rcmail_config['auto_create_user'] = true;

which created different user entries when I have caps lock turned on or accidentally hit Shift key during typing.

Anyway, shouldn't case of user be put to lowercase before authentication and all subsequent operations? is there any reason to have different user_id which lead to different entries in contacts/contacts_groups/cache etc?

Mirko