Comment 21 for bug 185650

Adding a "me too":

Nautilus keeps opening (home directory flashes for a split second), and crashing. Starting from the terminal I get:
barbex@barbex-laptop:~$ nautilus
Initializing gnome-mount extension
nautilus: symbol lookup error: /usr/lib/nautilus/extensions-1.0/libgnome-mount.so: undefined symbol: nautilus_file_info_get_drive

I CAN open the subdirectories /Documents, /Videos ,/Pictures ,/Music that have a link in the sidebar.

I don't have many extensions:
barbex@barbex-laptop:~$ dpkg -l | grep nautilus
ii libnautilus-burn4 2.21.5-0ubuntu1 Nautilus Burn Library - runtime version
ii libnautilus-extension1 1:2.21.90-0ubuntu1 libraries for nautilus components - runtime
ii nautilus 1:2.20.0-2ubuntu2 file manager and graphical shell for GNOME
ii nautilus-cd-burner 2.20.0-1 CD Burning front-end for Nautilus
ii nautilus-data 1:2.20.0-2ubuntu2 data files for nautilus
ii nautilus-sendto 0.12-2ubuntu1 integrates Evolution and Pidgin into the Nau