Seems to have solved my very problematic distributed computing issues. I have 4.1.1 installed on a MacMini server and a MBP and the two finally will talk and seem to be sharing the work on their way through a 90 minute h.264 encode. (This file failed when tried on more than one computer prior to the 4.1.1 upgrade.)
Aside from utilizing both machines, each machine CPU appears to be working at over 90% load - which is an improvement over the 60-70% utilization before.
Still there is an overhead involved with multi machine rendering so we'll see when this current encode is complete if the multiple machines actually improve total times.