Hi, I also had the "unknown ca" error. I got this when using Linksys software for WUSB54G on my Windows 2000 machine as the supplicant. After switching to my XP machine, the error disappeared and everything worked as intended.
Regards, Nicki de Wet - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
