Problem user?
I'm not sure how to target a specific account, but...
There are ways to check for activity, and boot users who haven't done anything for a set period of time.
Something like...
Hidden form with a txtTime field
Every 30 seconds (use the On Time event of the form, set to 30000) add 30 seconds (TimeSerial(0,0,30)) to txtTime
In the AfterUpdate event of each data entry form add some code to reset txtTime to 0
Back on the hidden form, check txtTime and when it reaches a threshold (15 minutes?), close the database -- just the front end.
That should close out any inactive users.
Denis