SSAS 2008 Deployment: The connection either timed out or was lost

The following issue is a problem in SSAS that you might run into either in test or deployment environments (see references). 

In a nutshell, when a client session running Vista or Windows 2008 talks over the network to an SSAS server running on Windows 2008, and they use Kerberos for authentication, there likely will at some point be connectivity problems that resemble timeout or firewall blocking problems. 

Errors might look like one of the following:

The connection either timed out or was lost.
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
An existing connection was forcibly closed by the remote host