CS6 question file sizes
I just purchased CS 6 last week, bur really haven.t had a chance to play with it. After reading your post, I openrd an Nikon nef file in CS6, --- which opened to an 18 meg file. The document file size(in the lower left corner) read 18 megs/0 megs . The e second number should read 18 megs also., . I then ,duplicated the file twice, and the document sizes read 18megs/17megs the right number should of been somewhere in the vicinity of 51megs-- which is the same problem you are having. I changed a couple of file handling preferences to no avail. My best guess is a glitch within CS6 (bug).
First thing I tried with CS 6, I discovered a bug- Can't open jpg files in ACR (in Bridge), and can't access camera raw preferences in ACR(Bridge)This is a common bug with CS6, which wasn't fixed with the ACR 7.2. update. i think came up with an simple work around for this bug, but haven't tested it enough, to be sure it totally solves the problem
As for the document size problem--I googled it , and didn.t come up with anything.