I'm having the exact same issue as the topic starter:
Device: BlackBerry 8820
Network:
WPA Enterprise
802.1x through PEAP, using EAP-MS-CHAP v2 with password based authentication
However, no certificate is required.
It seems like the blackberry is attempting to authenticate the certificate anyway... which I'm not quite sure what to do about because there's no "do not verify certificate" like there is in Windows/Linux (wpasupplication)
Our AP is not broadcasting another/same SSID with LEAP -- so the above suggested isn't working for me.
I think these topics are related:
PEAP using the same with a certificate has issues:
http://www.blackberryforums.com/wifi...p-support.html
Possibly the same issue on the ATT forums:
Re: Wi fi conncetion problem with 8820 - RIM BlackBerry - Wireless Forums from AT&T
Any further ideas?