I was having a nasty time trying to get my Apple Mail signatures to synchronize on my .Mac account. The same Conflict Resolver message would come up over and over again, with the same message:
There is one conflict involving Mail Rules, Signatures, and Smart Mailboxes. Select the correct com.apple.mail.SignaturesOwner information belowIt didn't matter whether I chose the Mail or .Mac choice, the Conflict Resolver would come back momentarily with another selection.
Mac OS X Hints
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