With profound regret, departmental supervisor Peter Dunckel forced an informal gathering to disband at Arlington Printing & Design Monday. 'I really do hate to break up this little party you've got going here,' Dunckel said, 'but break's been over for seven minutes. So if you could please get back to your respective workspaces, I'd really appreciate it.' It was the seventh such party Dunckel has hated to break up in the past four weeks. 