Server edition with W2003 Terminal services

I installed Avast server edition on W2003 with terminal services on; Avast has been configured with the terminal server wizard, everything works properly as I start a session as a privileged user.
As I start a session as a non privileged user I got these errors starting avast program:

1- Avast splash screen cannot load configuration

2- Configuration is not loaded proprely - Error: dbsGetStorage

3- Program cannot save parameters to the storage ( Error: dbsGetStorage)

Any suggestion?

Thanks a lot,

Gino de Simone

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