The sound-juicer owns the /usr/share/icons/hicolor/icon-theme.cache file I hope this is not how you update the icon cache! LOL ;-)
Exactly what version of sound-juicer is this?
# rpm -qf /usr/share/icons/hicolor/icon-theme.cache sound-juicer-2.16.0-1.fc6
Oh, i read mime cache not icon cache for some reason. Fixed in rawhide. Not really important to fix in fc6, as it won't really break anything.
*** Bug 225042 has been marked as a duplicate of this bug. ***