Pruning the forum database.
Configure desktop > Hardware > Removable devices > Enable automatic mounting ...
Linux Userland File SystemLUFS is a hybrid userspace filesystem framework supporting many filesystems:sshfs, ftpfs, localfs, locasefs, gvfs, etc. Lots of other "exotic" filesystemsare in the planning phase: socketfs, httpfs, freenetfs and others.
Utils to maintain the aufs file system.Aufs is a stackable unification filesystem such as Unionfs, which unifies severaldirectories and provides a merged single directory. In the early days, aufs wasentirely re-designed and re-implemented Unionfs Version 1.x series. After manyoriginal ideas, approaches and improvements, it becomes totally different fromUnionfs while keeping the basic features. See Unionfs Version 1.x series for thebasic features.
Automount utilities including an updated version of AmdAm-utils includes an updated version of Amd, the popular BSDautomounter. An automounter is a program which maintains a cache ofmounted filesystems. Filesystems are mounted when they are firstreferenced by the user and unmounted after a certain period of inactivity.Amd supports a variety of filesystems, including NFS, UFS, CD-ROMS andlocal drives.
I did this because the problem appeared after I installed this packages.However, It could be just a coincidence.