samba - Mar 2003 - win 9x clients can't get list of clients from Samba PDC

Slackware 8.1 Samba 2.2.4 PDC in a Win 9x/NT/2k network.

NT/2k clents can get the list of users in order to define shares with no
problem, but win 9x clients say: "You cannot view the list of users at
this time. Please try again later" and cannot define shares.

has anyone else faced this problem and how did you solve it ?

thx.