If you notice that a scan is “running” for an extended length of time and failing to complete, it is important to kill this process as it has the potential to max out CPU on the server. However, the web interface will not let you stop or delete the scan. The process we’ve found by which to stop these is to schedule the scan to be run a few minutes after the current time. When the scheduled scan kicks in, it kills the running process, allowing your scan to stop.