Exchange 2013 Service Pack 1 - Issues

Hi,

We've recently updated our Exchange 2013 with SP1. We are getting a lot of transport role issues - having to restart the service at least once a day since the update. 

There are a lot of the follow events in event viewer:

Event 16028, MSExchangeTransport

A forced configuration update for Microsoft.Exchange.Transport.TransportServerConfiguration has successfully completed. Object details from  the last notification-based reload: . New details: 

Any ideas what this is doing or why it is happening - it's only started since the Service Pack 1 was installed.

Hope you can help.

Thanks

Stephen