[Samba] Missing user in list of Windows 9x

[Ricardo Chamorro]

In a server Debian Sarge with Samba 3 PDC user security that spreads to LAN of 15 W9x/2000 clients, weeks ago the user "Rick" (with permissions of admin) disappeared of the list of users that is seen in the window "Share" of the Windows 9x clients (NOT in the W2K clients), reason why he cannot be added to shared folders on W9x.  
I erased and create again (on Linux and Samba) the same user "Rick" with such permissions and in such groups in which was, but "Rick" follows without appearing on W9x user list ....
Some idea???
Regards
Ricardo