Logged In: YES 
user_id=6405

Not at the moment, no. It is planned to add external user databases to 
Roundup in the future. 
 
Note that an instance may have many bug trackers in it - just by 
having more than one class of issue. So for example, you can have 
classes for "dev" (development tasks), "cust" (for helpdesk/customer 
tasks), "sys" (system tasks) and so on. Each resembles the classic 
schema "issue" class. Each shares the same "user" class because 
they're in the same instance.