[dnanian]

While I appreciate that you think that SD! has done this, RU64, there's just no way we're touching your Time Capsule (or modifying files on your source volume) when we back up. Rather, it sounds like you haven't configured Time Machine to ignore the Iomega, so it's backing it up -- and since you've backed up a nearly full copy of the source drive, it's going to back up a lot of data.

As far as SD! being "stuck" -- it's likely we're just copying a large file (or a FileVault/VMWare/Parallels volume). If you'll drop me a note to support, we can try to determine what, exactly, it is.