Alfresco 3.0 CE - WEBDAV SSO

[dellui]

Hi all.
With Alfresco 3.0 CE, can I access in SSO to ALFRESCO WEBDAV from a WINDOWS client (mount web directory or any other webdav client) ?
With CIFS authentication, sso works fine but ALFRESCO 3.0 CE CIFS implementation is slow and a little instable . With WEBDAV the only thing I can do is LDAP authentication. My problem is that the user should always put the username and password and asks me if is possibile to avoid.

thank you!
Gigi

[dellui]

Here http://wiki.alfresco.com/wiki/3.0_Configuring_NTLM I see that SSO is supported using

<filter>
      <filter-name>WebDAV Authentication Filter</filter-name>
      <filter-class>org.alfresco.repo.webdav.auth.NTLMAuthenticationFilter</filter-class>>
</filter>‍‍‍‍

but when I use this filter and make a try, alfresco tomcat stop and terminate immediately!!!

Any suggestion ?

Thank you.
Gigi