Dear List,
I was just trying to update gnome-mplayer (not in fedora, but that is irrelevant) which migrated from gconf to gsettings. The problem is, that the standard scriptlets [1] do not run on upgrades, leaving the package in a not working state (not running even). I think it would be good to establish some guidelines to handle such cases, since packages moving from gconf to gsettings are likely to become more and more common.
Cheers, Julian
[1] http://fedoraproject.org/wiki/Packaging/ScriptletSnippets#GSettings_Schema