Cisco VPN3000 webVPN configuration

The problem with CIFS access to share on a domain controller can be fixed by:
"It is also worth noting that it might be necessary to modify local policies on a Windows 2003 domain controller when configuring file access. Specifically, it might be necessary to open the Domain Controller Security Policy (found under Administrative Tools) and under Local Policies > Security Options disable the Microsoft network server: Digitally sign communication (always) policy (right-click and choose Properties)" - it should be disabled on a domain controller with shares.
additional link: http://www.networkworld.com/subnets/cisco/072507-ch10-deploying-vpns.html?page=4