[global]
        workgroup = MYGROUP
        realm = MYGROUP.MYDOMAIN.COM
        server string = Samba Server
        security = ADS
        password server = dc01
        log file = /var/log/samba/%m.log
        max log size = 500
        socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
        printcap name = /etc/printcap
        dns proxy = No
        idmap backend = ad
        idmap uid = 1000-50000
        idmap gid = 10000-100000
        template shell = /bin/bash
        winbind enum users = Yes
        winbind enum groups = Yes
        winbind use default domain = Yes
        winbind nss info = template, sfu
        cups options = raw
Apr 18 10:48:44 maestro winbindd[23423]: [2007/04/18 10:48:44, 0] lib/fault.c:fault_report(41)
Apr 18 10:48:44 maestro winbindd[23423]:   ===============================================================
Apr 18 10:48:44 maestro winbindd[23423]: [2007/04/18 10:48:44, 0] lib/fault.c:fault_report(42)
Apr 18 10:48:44 maestro winbindd[23423]:   INTERNAL ERROR: Signal 11 in pid 23423 (3.0.25rc1)
Apr 18 10:48:44 maestro winbindd[23423]:   Please read the Trouble-Shooting section of the Samba3-HOWTO
Apr 18 10:48:44 maestro winbindd[23423]: [2007/04/18 10:48:44, 0] lib/fault.c:fault_report(44)
Apr 18 10:48:44 maestro winbindd[23423]:
Apr 18 10:48:44 maestro winbindd[23423]:   From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
Apr 18 10:48:44 maestro winbindd[23423]: [2007/04/18 10:48:44, 0] lib/fault.c:fault_report(45)
Apr 18 10:48:44 maestro winbindd[23423]:   ===============================================================
Apr 18 10:48:44 maestro winbindd[23423]: [2007/04/18 10:48:44, 0] lib/util.c:smb_panic(1620)
Apr 18 10:48:44 maestro winbindd[23423]:   PANIC (pid 23423): internal error
Apr 18 10:48:44 maestro winbindd[23423]: [2007/04/18 10:48:44, 0] lib/util.c:log_stack_trace(1724)
Apr 18 10:48:44 maestro winbindd[23423]:   BACKTRACE: 18 stack frames:
Apr 18 10:48:44 maestro winbindd[23423]:    #0 winbindd(log_stack_trace+0x2e) [0x3c680e]
Apr 18 10:48:44 maestro winbindd[23423]:    #1 winbindd(smb_panic+0x57) [0x3c6927]
Apr 18 10:48:44 maestro winbindd[23423]:    #2 winbindd [0x3b15ff]
Apr 18 10:48:44 maestro winbindd[23423]:    #3 /lib/tls/libc.so.6 [0xd1c898]
Apr 18 10:48:44 maestro winbindd[23423]:    #4 winbindd(idmap_sids_to_unixids+0x470) [0x4f0320]
Apr 18 10:48:44 maestro winbindd[23423]:    #5 winbindd(idmap_sid_to_uid+0x61) [0x4f36a1]
Apr 18 10:48:44 maestro winbindd[23423]:    #6 winbindd(winbindd_dual_sid2uid+0x13b) [0x36256b]
Apr 18 10:48:44 maestro winbindd[23423]:    #7 winbindd [0x360730]
Apr 18 10:48:44 maestro winbindd[23423]:    #8 winbindd [0x3614f4]
Apr 18 10:48:44 maestro winbindd[23423]:    #9 winbindd(winbindd_sid2uid_async+0x7d) [0x36241d]
Apr 18 10:48:44 maestro winbindd[23423]:    #10 winbindd [0x334ee9]
Apr 18 10:48:44 maestro winbindd[23423]:    #11 winbindd [0x3658c9]
Apr 18 10:48:44 maestro winbindd[23423]:    #12 winbindd [0x361437]
Apr 18 10:48:44 maestro winbindd[23423]:    #13 winbindd [0x360e41]
Apr 18 10:48:44 maestro winbindd[23423]:    #14 winbindd [0x3327cc]
Apr 18 10:48:44 maestro winbindd[23423]:    #15 winbindd(main+0x75b) [0x333d8b]
Apr 18 10:48:44 maestro winbindd[23423]:    #16 /lib/tls/libc.so.6(__libc_start_main+0xd3) [0xd09de3]
Apr 18 10:48:44 maestro winbindd[23423]:    #17 winbindd [0x332221]
Apr 18 10:48:44 maestro winbindd[23423]: [2007/04/18 10:48:44, 0] lib/fault.c:dump_core(174)
Apr 18 10:48:44 maestro winbindd[23423]:   dumping core in /var/log/samba/cores/winbindd

I can send the core file to you on request.