Comment 2 for bug 729033

I've looked through the gconf keys which stores an XML string which doesn't appear to have any obvious identifying feature, I've looked through various xml files in the .evolution folder and nothing seems to have anything which pertains purely to whether or not the calendar is activated in the UI or not.

The evolution mailing list points to a decision to use a GKeyFile instead of gconf or dconf for future releases but I'm not sure whether or not that's actually been implemented in our current release.