From: "Rich Gauszka" 

Geo - I noticed that I had to apply the Buffalo registry patch (changing
the LmCompatibilityLevel)   to Vista before I could access the Terastation
from
Vista - had no problem with XP or OS X


Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]
"LmCompatibilityLevel"=dword:00000002


http://www.microsoft.com/technet/technetmag/issues/2006/08/SecurityWatch/?relat
ed=/technet/technetmag/issues/2006/08/SecurityWatch

Although Windows Vista has not been released yet, it is worthwhile to point
out some changes in this operating system related to these protocols. The
most important change is that the LM protocol can no longer be used for
inbound authentication-where Windows Vista is acting as the authentication
server. Windows Vista will no longer store the LM hash by default. Acting
as a client, Windows Vista also makes a change to outbound protocols by
setting LMCompatibilityLevel to 3 by default. In other words, NTLMv2 will
finally be the default protocol for non-domain authentication. In the next
scheduled release of the Windows Server platform, code-named "Longhorn
Server," a lot of work has been done to reduce the need for NTLM
altogether. In Windows Server 2003, NTLM, and sometimes even LM, is used in
many cases, such as in clusters. In the next version of the operating
systems many of these protocols will finally be turned off by default.

--- BBBS/NT v4.01 Flag-5