samba - Mar 1999 - "include = smb.conf.%U" lost in Samba 2.0.3 ?

Hi all !
Before to upgrate my Samba version (1.9.. - 2.0.3 , RH 2.0.36) every
user connected to the Samba server get a different list of shares, based
on the "include = smb.conf.%U" line in smb.conf/[Global] . I
understood
that I can't use %u in "include" parameter, but I've got my
work done
with %U until... :(
What should I do to solve this ?