Description of problem:

Running yum update gives produces warnings and errors:
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Warning in file "/usr/share/applications/fedora-Thunar-folder-handler.desktop": usage of MIME type "x-directory/gnome-default-handler" is discouraged ("x-directory" is an old media type that should be replaced with a modern equivalent)
Warning in file "/usr/share/applications/fedora-Thunar-folder-handler.desktop": usage of MIME type "x-directory/normal" is discouraged ("x-directory" is an old media type that should be replaced with a modern equivalent)
Warning in file "/usr/share/applications/fedora-xarchiver.desktop": usage of MIME type "multipart/x-zip" is discouraged ("multipart" is a media type that probably does not make sense in this context)
Warning in file "/usr/share/applications/gnome-nautilus-folder-handler.desktop": usage of MIME type "x-directory/gnome-default-handler" is discouraged ("x-directory" is an old media type that should be replaced with a modern equivalent)
Warning in file "/usr/share/applications/gnome-nautilus-folder-handler.desktop": usage of MIME type "x-directory/normal" is discouraged ("x-directory" is an old media type that should be replaced with a modern equivalent)
Error in file "/usr/share/applications/kde/printers.desktop": "print/manager" is an invalid MIME type ("print" is an unregistered media type)
Error in file "/usr/share/applications/kde4/kfontview.desktop": "fonts/package" is an invalid MIME type ("fonts" is an unregistered media type)



Version-Release number of selected component (if applicable):
setroubleshoot-2.2.77-2.fc13.i686 

How reproducible:
?

Steps to Reproduce:
1.yum update
2.
3.
  
Actual results:
Warnings

Expected results:
No warnings

Additional info: