[Samba] I have no name Error

[Linux Addict]

I just compiled and installed samba 3.2.4 on Redhat host and configured as
member. While I try to login as an AD user, I get "I have no name" and
"cannot find name" error.

[root at testhost]# su - testuser
id: cannot find name for user ID 11616
id: cannot find name for group ID 10513
id: cannot find name for user ID 11616

But wbinfo --uid-info=11616 returns the result.

Any idea why?

thanks