I have some queries that take several minutes to run (anywhere from 5 to 15). If I try to kill them by clicking the "Break" button, or by typing "Shift-Esc.", nothing happens. The only way to terminate the query is to try to exit the application. Usually I have to wait about 30 seconds for the file-save dialogue to appear. I click "Cancel" and then go back to work, but it's a little frustrating, especially because it doesn't seem to be 100% consistent. Any ideas why this might be happening? Is it the type of query? Could this be caused by something on the server (because the same query will not always exhibit this behaviour)? This only seems to happen with queries - scripts seem to terminate properly when I click the "Break" button.