Hello, ever since I upgraded to 10.11.6 one of our iMacs has a problem: Time Machine mounts the Time Capsule (and after one hour the second hard disk) but never releases them. A reboot cleans up, but after 2 hours the situation is the same. So there is /Volumes/Time Machine Backups and /Volumes/Time Machine Backups 1 Our other iMac and MacBook do not have this problem, although running 10.11.6 too. What could be the cause? ;JOOP!