"Because of an error in data encryption" I get disconnect RDC

Hi,

I am connecting to Server 2008 via RDC from Vista Ultimate. I just finished a new install and since then I am getting very intermittently the above fault.

I never had this before, and this is at least 3 month now.

Any glues, I checked the registry, as per previous problems, but no luck.

Thanks

Sepp Schembera