MRV problems after HD GUI update

I have been having some issues with MRV since the HD GUI update. I have several freeze-ups when I am watching a program that has been recorded in another room. It usually locks-up for about 15 seconds. Sometimes it will freeze for several seconds and then say that the other receiver has been disconnected. I have reset the receivers numerous times and have reset my network. I had no problems before the update. I have an HR 21-700 in my bedroom and an HR 24-500 in my living room. The bedroom receiver has an external DECA. I wonder if this could be going bad?

Thanks for any help.