Hey guys, I haven't used TM in a while, but I'm wondering why TM would always start from scratch when making backups? I have done a full backup last week (~290GB) and today I plug my external disk into my MBP and it will simply restart the entire process ("backing up xx of 260GB") instead of simply adding the delta? Is this the way TM does backups?? Seems a bit annoying to me since it takes ages this way every time. Thanks!