I encountered a problem which was very disappointing to me: A Thunderbird plugin issued several printing jobs to our main printer at the welcome desk, which where all shown in the jobs journal. The printer was unattended an printed till the bin was empty. When I noticed it, I deleted all running print jobs on the client machine but the print jobs where still shown at the printer.
I tried to look for something like a "bulk delete" or "delete all jobs" button, but negative. I had to cancel and delete every job one by one.
Is there really now other way than that? Nor over the webserver or some hidden menu?