Problem with Vista EAP-PEAP Authentication

[debug afone]

Hello, 

We are trying to authenticate Windows Vista clients using FreeRadius into a
HP Procurve architecture. We configured FreeRadius to operate an EAP-PEAP
authentication.
This works fine with XP SP2 client but the process blocks with Windows Vista
at this point : 

Sending Access-Challenge of id 70 to 10.40.0.114 port 1073
        EAP-Message = 0x010500061900
        Message-Authenticator = 0x00000000000000000000000000000000
        State = 0x668d79caa2854b593ec7e91a8004030b

I saw a few posts on the web regarding to this problem. Some users advise to
install kb932063 microsoft hotfix but I still have my problem.
A patch has been released in 1.1.3 version and then included to 1.1.4 an
older. I use 1.1.6 version. 
The Option SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS take part of rlm_eap_tls.c
file. 

Does anybody have an idea ?

Regards, 

Nicolas SOULEMAN.