On Monday June 01 2020 15:22:18 test wrote: >while KDE is running, so who knows ... At least it would explain how >everything gets stuck except kwin maybe, although not why it all gets stuck >only when he /doesn't/ unmount home directories. Yes it does. By default NFS will strive for data integrity, so when a server goes offline any attempt to access data on that server over NFS will block until the connection is re-established. I can assure you from experience that this can be a snowball effect, just as when you take a local disc offline without unmounting it properly.