If you just use Jenkins for code builds, then having a popup before aborting a job seems like a good idea. However we also use Jenkins to run our selenium test suites and there are hundreds of jobs in there which all need aborting if you know a core server is down...or there's a "slowdown" in the system somewhere. So now we have to click a popup for every job we abort.....very painful..... Ideally we should have a "Abort All running jobs" ......with a single popup "WARNING , this will kill all jobs, pending and running, on both the master and any slaves, are you sure?" .