Vista - Remembering sign-in info on Limited accounts

Hello

(I originally posted this in the MSN section before I found the Windows Live
section)

I support PC's that use Limited accounts and have recently had problems with
WLM 'remembering' signon information. The problem may have started with
Build 2009 v14.0.8064.206 .

Users are signed in with 'Remember me', 'Remember my password' and 'Sign me
in automatically' checked. If the device is placed in Standby or Hibernate,
the user is signed in automatically when they log into their account.

However, once the device is Restart'd, the signon information is gone from
Limited accounts. How can I get Windows/WLM to remember signon information
and sign users in after a Restart?

Thanks in advance -- Dave