Windows 2008 LDAP and auth-conf

There is a test we are doing by migrating our Windows 2003 to 2008 64bits active directory and we noticed that our Linux system are not able to authenticate using DIGEST-MD5. The error that I get is - DIGEST-MD5: Unable to negotiate a strength level for 'auth-conf'. It will work properly from our Windows 2003 AD so somebody told me they is a non Public Hotfix for Windows 2008 available to fix this problem since windows 2003 and 2008 do support using SASL with "auth-conf". Any ideas?