samba authentication

[Ami Shamril]

Hi...
I've successfully configured samba 2.0.6 (RH6.2) as a PDC.
All my users (Win9X) can log into the server.
But there is one problem... sometimes we must enter at least 3 times the
password b4 the server authenticated it.
1st & 2nd time the error is password not correct.... Even we key in the
correct password. For the 3rd time normally ok...
Anybody have the same problem...
Please advise
TQ in advance.