Re-installing the following packages from synaptic package manager might solve the issue. Worked for me. Had a similar issue and solved by re- installing and reboot.
fuse (2.8.6-2ubuntu2) gnome-disk-utility (3.0.2-2ubuntu7) growisofs (7.1-10) gvfs (1.12.1-0ubuntu1.1) gvfs-bin (1.12.1-0ubuntu1.1) gvfs-common (1.12.1-0ubuntu1.1) gvfs-daemons (1.12.1-0ubuntu1.1) gvfs-fuse (1.12.1-0ubuntu1.1) gvfs-libs (1.12.1-0ubuntu1.1) libfuse2 (2.8.6-2ubuntu2) libgdu0 (3.0.2-2ubuntu7) libplymouth2 (0.8.2-2ubuntu31) mountall (2.36.4) plymouth (0.8.2-2ubuntu31) rsyslog (5.8.6-1ubuntu8) udisks (1.0.4-5ubuntu2.1) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1077058 Title: Udisks --mount /dev/sda? does not work in 12.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udisks/+bug/1077058/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
