[ixp1200] Functionality of A0 Silicon?

Hello List, It would seem that I am lucky enough to have an Evaluation Kit with A0 Silicon. I was able to glean this bit of information from a helpful source:

Intel released 3 versions I know of, each less crippled then the last. The B0 parts are useable. The A0 parts have a number of serious bugs.

How bad are the A0 parts? What are the bugs? Thanks in advance! -Loren