I have looked on CCO for a list of open bug cases as I have a customer that is persistent on deploying version 6.0 into their production environment. They have approx 1400 phones to be deployed, with Unity UM/Domino and approx. 70 remotes sites. We have recommended they install version 5.1 and upgrade to 6.1 when it is FCS. That was not a good answer for them. I am trying to find some hard concrete Cisco facts that would steer them away from deploying 6.0. There implementation time frame is August/Sept. Any assistance is greatly appreciated.