I donīt know if it is interessting, but here some new from ElcomSoft:
With the latest version of Elcomsoft Distributed Password Recovery, it is now possible to crack WPA and WPA2 protection on Wi-Fi networks up to 100 times quicker with the use of massively parallel computational power of the newest NVIDIA chips. Elcomsoft Distributed Password Recovery only needs a few packets intercepted (with any network sniffer that can export data in tcpdump format) in order to perform the attack.
For more Info look at elcomsoft.com
I think for small Psk Passphrase it could be an alternative (sadly commercial) method to crack WPA/WPA2 ...