Cheers for the informative guide Hiddenevil.
Just got my NetGear MA401 today and used an old laptop with XP to upgrade the firmware/station and it works like a charm in my A600@30MHz.
Whole procedure was really easy. Linksys drivers worked in my case but had to disable the radio from the tray icon for the WinUpate to stop giving some read error
Nothing serious though. Update was done flawlessly.
After using it for more than an hour on my A600 I can say that I haven't noticed any delay at all @ WPA2.
Using MiamiDx I've used any possible internet application (AmIRC, AWeb, SabreMSN, Samba etc) without a single issue.
Awesome stuff
