[Update] As per the comments/answers I forgot to mention that the common fault with the Update for Communicator has been fixed company wide. I have been informed that this was not an issue with the machine at all.
Recently I also faced several issues from my customers and I would like post a collected summary here for this scenario.
When Communicator client access the contact card, it will retrieve the title info from Static Publications, which is aggregated by OCS server.
For the details, when a user subscribes to a presentity’s presence, the user can receive multiple instances of the presentity’s contact card.
One of these is published by Office Communications Server when the data is from Active Directory.