Comment 54 for bug 235698

From the instructions on https://wiki.ubuntu.com/Testing/EnableProposed , I think you can maybe replace this last line
 sudo aptitude -t hardy-proposed
With this command, so as to just install these updates, without the confusing text-based interface:
 sudo aptitude install -t hardy-proposed gvfs-fuse gvfs-backends gvfs
(I'm no expert though, but that's what I did, and rebooted, and it seems to be working okay - no crashes so far).