I am using the update_users web service and I think there is a possible bug. Within the web services documentation it says that passing the "password" field to the service is Optional. I am not passing a password when using the web service, but when I am actually running the web service it is causing my users' passwords to be empty. I am just curious if this is the case with anyone else? If not then I guess I might need to step through my code again.
FYI: I am running Moodle 2.0.1 as of right now.