Sometimes OS X tells me that it's "Preparing backup..." for an enormous amount of time. The time it takes seems to have no correlation to the amount of data to be backed up. Same for the "Finishing backup..." stage.
The question: what is OS X doing when it's "Preparing backup..." and "Finishing backup..."?
I know it's figuring out what to backup and then recording the changes, but surely the time this takes should be proportional to the amount of data that changed. There's plenty of space disk space (so I assume it's not deleting old backups). I'm using a TimeCapsule if that makes any difference. Nothing is going wrong with it, I'm just curious.