A number in my guild (Pacific) have encountered this problem as well - prior to the release of SA. Losses include two conjurer's trinkets and an ornament of the magician. It seems that the error might be related to items that were insured with a character (thus displaying 'insured') then passed to another character. The items show insured, but they aren't insured for the new player holding the item. A solution seems to be un-insuring then re-insuring on the character finally holding the item. No losses since we started doing this.