[Samba] Samba 3.0.28a and win 98 no access on shares, no domain login

[Jens Wulf - Web.de]

I've migrated from Ubuntu 6.10 to Ubuntu 8.04 (samba 3.0.28a), using the same smb.conf and the same smbpasswd. But i can't connect to the Ubuntu/Samba server (PDC) with win 98-clients anymore. Win2K Clients still working with no problems, but the 98ers can't log on the domain nor can access any shares.
The user and passwd ist the same as the win2k-clients.
When trying to connect to a share then win 98 is asking for password for ipc$. When tryin to log on domain the it cant connect to server or wrong password (lousy translation of the german message i get ;-)).
password encryption is enabled and as i said, the connection worked with the old samba (3.0.20?) without problems. Is there anything changed that may affect win 98 ?

Greets Jens