400MHz Dell Poweredge server with Debian and Samba 3.0.8 from the .deb files at samba.org. 40 WinXP Acer workstations connected via ethernet are joined to the domain and working fine. Profiles are local. However, new P4 Toshiba laptops(XP Service Pack 2, 256MB RAM) are unable to cache credentials. That means laptops can join the domain when connected via ethernet, and domain users are able to log in, but disconnected operation is impossible. The laptop reports "domain is unavailable" and refuses to let the user past the password prompt. Not convenient when they take the laptops home. User's best option is to log on to the laptop with a local user account and mount shares from a script. But I would rather they join the domain. The laptop security policy is set to cache 10 credentials by default. My aged Windows 2000 laptop can handle this situation just fine. It caches credentials and user can log on in disconnected mode, provided at least one connected domain login has occurred ever. Windows 2000 laptop can even login successfully over the wireless access point-- another thing the poor XP laptops are unable to accomplish. I've tried everything I can think of -- is there a registry hack or configuration trick which will make WinXP honor the cached credentials? Thank you.