Somewhat off-topic, as I think this isn’t Backpack-specific, but has anyone had any luck getting ical feeds to auto-refresh in iCal under Leopard?

I cannot get my feeds to refresh at all right now, even when I choose “Refresh All.” I keep having to reset the iCal address each time I make additions to my Backpack calendars and redo the subscriptions.

Has anyone managed to fix this yet?