After the upgrade to 11.10 I've had the problems that
- all music-files would open with banshee, which then crashed
- all folders would open with konsole
The first problem I after installation of "ubuntu tweak" "> admin > filetype Associations".. Changed back to totem.
The second was somehow not accessible this way (did not give any possibility to add commands).
I've changed the line "inode/directory=nautilus-folder-hanlder.desktop" to "inode/directory=nautilus.desktop" from "/usr/share/applications/defaults.list" and now everything works fine.
Question: More convenient ways to do that?