If you have XP and use EECS-Secure, please make sure your configuration on your wireless client is as following link: https://iris.eecs.berkeley.edu/15-faq/05-windows_2000/xp-eecs-secure.html
If you have vista and use EECS-Secure, please make sure your configuration on your client is as following link: https://iris.eecs.berkeley.edu/15-faq/05-windows_2000/vista-eecs-secure.html
Other issues, please contact with networks@eecs or help@eecs.
Thanks,
UPDATE
[2009-11-14 10:23:21 | Janet Shu]
All of ap controllers have been switched back to old RADIUS servers. We are working closely with the vendor for the certificate issues on new RADIUS servers. We might switch back to new ones when the issue is solved. Thanks.
Resolved as of 2009-11-14 10:16:00