when upgrading certain packages return the error: Unknown media type in type...

[George Prowse]

While doing an upgrade certain packages (nautilus-data, seahorse and probably others I haven't noticed) return with these errors:

Setting up seahorse (2.21.4-0ubuntu2) ...
Unknown media type in type 'x-content/video-vcd'

Unknown media type in type 'x-content/video-svcd'

Unknown media type in type 'x-content/video-dvd'

Unknown media type in type 'x-content/image-dcf'

Unknown media type in type 'x-content/audio-cdda'

Unknown media type in type 'x-content/blank-cd'

Unknown media type in type 'x-content/blank-dvd'

Unknown media type in type 'x-content/blank-bd'

Unknown media type in type 'x-content/blank-hddvd'

Unknown media type in type 'x-content/audio-dvd'

Unknown media type in type 'x-content/video-bluray'

Unknown media type in type 'x-content/video-hddvd'

Unknown media type in type 'x-content/image-picturecd'

Unknown media type in type 'x-content/audio-player'

Unknown media type in type 'x-content/software'

They do seem to install correctly though.

uname -a:
Linux george-desktop 2.6.24-3-generic #1 SMP Thu Jan 3 23:30:29 UTC 2008 i686 GNU/Linux

[marktechey (marktechey)]

I have the same problem. I know have some file icons that are different. Screenshot at link.
https://bugs.launchpad.net/bugs/185481

[marktechey (marktechey)]

I can repeat this with the following command
sudo update-mime-database /usr/share/mime