@bruno.barga and Jänz: To me it sounds like the feature you are asking for is already implemented in Nautilus (see screenshot).
** Attachment added: "Tree view in Nautilus" http://launchpadlibrarian.net/28065832/Screenshot-home%20-%20File%20Browser.png -- Nautilus file browser toolbar is complicated, redundant, and ugly https://bugs.launchpad.net/bugs/386150 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs