Not related to face time but once I sent a two part SMS to my mother (over 140 characters and all that). Her reply made no sense, she was talking about stuff I have not said in my text at all. After much of confused back and forth, I have found out that she received the first part of my SMS correctly, but the second part was taken from some completely random message that probably somebody else sent. I suppose that in some other part of the world there were another two confused people who got the texts mixed the other way round.