samba - Jun 2007 - error loading US-ASCII.so (back to samba-3.0.24 to solve)

Hello list,
Always in the same thread ([Samba] error loading US-ASCII.so):
http://www.mail-archive.com/samba@lists.samba.org/msg85235.html
 to solve my trouble, I use samba-3.0.24 finally !!!

In samba-3.0.24 , configure script give:

checking for iconv in /usr/local/lib... yes
checking can we convert from CP850 to UCS2-LE?... CP850
checking can we convert from ASCII to UCS2-LE?... ASCII
checking can we convert from UTF-8 to UCS2-LE?... UTF-8

In samba-3.0.25a , configure script give:

checking for iconv in /usr/local/lib... yes
checking can we convert from CP850 to UCS2-LE?... no
checking can we convert from IBM850 to UCS2-LE?... no
checking can we convert from ASCII to UCS2-LE?... no
checking can we convert from 646 to UCS2-LE?... no
checking can we convert from UTF-8 to UCS2-LE?... no
checking can we convert from UTF8 to UCS2-LE?... no
configure: WARNING: Sufficient support for iconv function was not found.
    Install libiconv from http://freshmeat.net/projects/libiconv/ for 
better charset compatibility!

In both, I use ./configure --with-quotas --with-ads --with-ldap 
--with-libiconv="/usr/local"

Thanks a lot all for your help :-)