I am using Lightroom 4 and its working fine however today for the first time I noticed the following comments in the Metadata Status box which I don't understand and have not been able to find any help in my guidebook.
Metadata Status reads
All (2 Metadata Statuses) 29965
Has been changed 29836
Up to date 129
Is there a problem with my database that I don't know about and should I be concerned?