mime type for .mobi files is missing

[Alexander Adam]

I use Ubuntu 11.10 and the mimetype of files in mobipocket format (*.mobi) is still missing.
The tool "mimetype" gives me an "application/octet-stream" and nautilus also lists them as unknown while the tool "file" has no problem to recognize them as "Mobipocket E-book" (but also gives an "application/octet-stream" when asking for a mime type).
Google says, that the correct mime type should be "application/x-mobipocket-ebook"

I don't know wether this also should be mentioned here but: if installed, these books are for example readable with fbreader.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.