Thank you. I was actually looking for decoding the affixes. The puzzle part I missed was the re-seeding.
I am not sure if you heard about the hack that lets you know the affixes on unID'ed items. Someone wrote a program to show you the affixes given a string that you could cut and paste from chat while browsing the AH. As it turns out, that string also contained to affix, so you could completely determine the item stats.
Blizzard's fail in this regard is epic. Once again, they failed to adhere to what I call:
Rule # 1 of Client/Server Programming: Never trust the Client.
Really sucks that the buying and selling of unID'ed items is dead. I was making a lot of Gold doing so, and I didn't even know about this hack until it was all over the forums.
I did know that you could determine the number of affixes since that came across in the GameServer packets. When an item is identified, the values for the attributes come across as well, but for unIDed, the affixes are all generic "unknown prefix" and "unknown suffix".
Little did I think about the fact that this info would be available through the AH packets. I didn't really think about it since you can't sell those items. And I assumed they would follow the same rules as the Game Server packets and not show the affixes. As it turns out, AH item packets are encoded very differently than GameServer packets (which I already knew), and this became the weakness.