See
http://myezserver.com/downloads/mitel/howto/samba-howto.htmlextract below
Windows 2000/XP Registry Settings
It is suggested that you check the following registry entries which should be set to (0). This is the default under W2K (but check to confirm) however under XP the default is (1) and definitely needs changing:
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Netlogon\Parameters]
"requirestrongkey"=dword:00000000
"requiresignorseal"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Netlogon\Parameters]
"requirestrongkey"=dword:00000000
"requiresignorseal"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters]
"requirestrongkey"=dword:00000000
"requiresignorseal"=dword:00000000
Regards
Ray Mitchell