[Samba] net ads join on AIX 5.2 - Mission Impossible ?

[samba at lonx.net]

Hi all,
is it possible at all to get Samba 3 on AIX 5.2 to join a Win 2003 Domain natively ? All the precompiled versions do not have AD Support and having AIX krb5 installed (let alone using --with-ads)is enough to make a compile run fail - both 3.0.14 and 3.0.20rc2. Might Heimdal solve this ? Has ANYONE got a working installation ?
Solving this would make quite a difference to my current life, so any advice would be appreciated. 
TIA & regards 
Dan