I recently upgraded to the 0.6.40 version, and when I uploaded 2 sets of book series, they were uploaded to my 505 but they weren't in the right order.
I removed them from the device, and resent them to it, and it's the same problem. The books read fine, they just aren't in the order they need to be (and what is specified in the metadata) on the reader.
Just curious if it was only me. The collection numbers on the side are what they need to be, just not in the right order when they hit the reader.
Software rocks

, this is the first "big" problem I had with it.