change password, with 2.0.7

[Mailing Manager]

Hi all,

After a successful login, with my profile, netlgon and so on, i test to
change my password.Nothing, here is the log:
[2000/05/03 15:09:56, 0] smbd/nttrans.c:call_nt_transact_ioctl(2516)            
  call_nt_transact_ioctl: Currently not implemented.                            
[2000/05/03 15:12:44, 0] smbd/chgpasswd.c:check_oem_password(638)               
  check_oem_password: getsmbpwnam returned NULL                                 
[2000/05/03 15:12:59, 0] smbd/chgpasswd.c:check_oem_password(638)               
  check_oem_password: getsmbpwnam returned NULL                                 
[2000/05/03 15:13:11, 0] smbd/chgpasswd.c:check_oem_password(638)               
  check_oem_password: getsmbpwnam returned NULL 

the passwords are different and no NULL.....