NSM 3.1 Agent Heartbeat

Hello,

i'm testing a new install of NSM 3.1 on a new Windows 2008 R2 installation to see if we can migrate from 3.0.3 to 3.1

But as soon as i Authorize the (local) agent i get a "Warning: A heartbeat has not been received for more then 5 minutes."

i have put login on the agent en engine to debug but the only usefull info is from the agent log:

Successfully performed a heartbeat communication
Received a "ACK" HB response
Received an "Authorized" HB response, nStatus = 0.


there is noting in the engine log.

Hope you can help me,

Niels van de Haar