I am getting a message on my iphone 4 and it just will not stop. It started about a week ago and I don't know what to do about it. This is the exact message: Cannot verify server identity Yahoo! cannot verify the identity of "caldav.calendar.yahoo.com" Would you like to continue anyway? Cancel Details Continue I understand that this has something to do with yahoo calendars, which I do not and have never used. If anyone knows how to fix this I would appreciate any help you can provide. Thanks.