Why buy a NAS?

The XP hardening settings that were pushed out to my test group have found their first potentially major casualty. The NAS server from Buffalo Tech is not accessible when the client is set to the LM compatibility level 4; use NTLM refuse LM. Sniffing the network connection shows that the TeraStation is using a SAMBA server from 4/3/2003. A quick google finds that this device does not support Lanman and everybody’s “fix” is to lower the security level of windows and allow lanman.
While I question the wisdom of a bunch of ad hoc, non-backed up, consumer level NAS servers, this may still be a problem for me. I don’t see Buffalo releasing firmware with a newer version of SAMBA any time soon.
The setting that I am trying to enforce on my computers is the default in Vista.