Ay! Yep! Only solution is 'umount MyDocs -l' manually. This is lazy unmounting, also referenced in osso-mmc-umount, but not called. I know how to workaround, but would like to know the reason (and correct solution). Cheers. --edit Ay. Yes. I am sure. Also checked with lsof (nothing open) and fuser (do not know if output is correct).