Invalid NT-key issue

Hi all,   We are using freeRADIUS (1.1.6) + samba (3.3.3) talk to multiple ADs. Sometimes ntlm_auth got invalid NT-key. It should be a samba issue. Which samba version is good?   I googled this issue, Someone has the same problem https://bugzilla.samba.org/show_bug.cgi?id=6563   HJ