I know that 1TB once formatted on the time capsule gave me 929.5 GB of storage. However, the actual space for backup says it's only 929.3 left, in specific, with 0 users, it takes up 180mb of storage. Can any other time capsule 1TB user verify this? I erased the whole disk using the "erase" function within airport utility and it still occupies 180mb. Do I have a corrupt disk or is everyone's like that? For 500gb TC users, does it also take up 180mb? Thanks.