After the global rollout of Facebook Timeline, some users were worried that their private messages from 2009 and earlier were being published to their Timelines. These users thought that the posts were being published to the “messages from friends” box, which shows old wall posts on a user’s Timeline. After Facebook investigated the issue, they released the following statement to TechCrunch:[quote]Every report we’ve seen, we’ve gone back and checked. We haven’t seen one report that’s been confirmed [of a private message being exposed]. A lot of the confusion is because before 2009 there were no likes and no comments on wall posts. People went back and forth with wall posts instead of having a conversation [in the comments of single wall post.][/quote]
Facebook has also said that they use separate servers for wall posts and for private messages, so it woud be very unlikely for a security breach like this to occur.
Josh Constine at TechCrunch has also done his own research and found that none of his private messages were published to his Timeline. So, it looks like we can all breathe easy.