[xubuntu-users] Update-Upgrade 'Unknown media type'

[James Freer]

For the last few releases (that I can recall) I get the following when I 
upgrade which I do with an alias.

alias ag#='sudo apt-get update && sudo apt-get -u dist-upgrade'
"
...
Processing triggers for man-db (2.6.7.1-1) ...
Processing triggers for shared-mime-info (1.2-0ubuntu3) ...
Unknown media type in type 'all/all'
Unknown media type in type 'all/allfiles'
Unknown media type in type 'uri/mms'
Unknown media type in type 'uri/mmst'
Unknown media type in type 'uri/mmsu'
Unknown media type in type 'uri/pnm'
Unknown media type in type 'uri/rtspt'
Unknown media type in type 'uri/rtspu'
Processing triggers for hicolor-icon-theme (0.13-1) ...
...
"
What does it mean? It doesn't seem to be a problem but I am just curious.

thanks
james