Thank you for your bug. That's because files starting by "From " are detected as mboxes and there is no application associated to open them. The applicate/mbox type should probably be a sub-class from text/plain, I've opened a bug upstream about that: https://bugs.freedesktop.org/show_bug.cgi?id=9859
** Changed in: nautilus (Ubuntu) Sourcepackagename: nautilus => shared-mime-info Importance: Undecided => Low Assignee: (unassigned) => Ubuntu Desktop Bugs Status: Unconfirmed => Confirmed ** Bug watch added: Freedesktop Bugzilla #9859 https://bugs.freedesktop.org/show_bug.cgi?id=9859 ** Also affects: shared-mime (upstream) via https://bugs.freedesktop.org/show_bug.cgi?id=9859 Importance: Unknown Status: Unknown ** Summary changed: - [Feisty] nautilus cannot find an application to open certain text files + application/mbox should be a sub-class of text/plain? -- application/mbox should be a sub-class of text/plain? https://launchpad.net/bugs/83001 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs