Thanks Lee for that information. I had not thought about AV issues, but we did consider it could be a firewall problem. Thus, I deactivated those services on the computer while testing. In our case, it does not seem to be the problem.
It almost never happens the first time up. Just this morning for example, we turned on the computer and ran the admin console and saw everything reporting status just fine. I closed the panel. Some two hours later I opened admin again to make a change to a scene, but there was the problem again. Closing and restarting the admin almost never solves the problem. If we wait long enough, the problem goes away. We are pretty sure we never saw this problem occur in ver 3.2.6. It was only afer upgrading to 3.3.4 that we noticed this issue. Sometimes we can open and close the admin panel several times during a day (while we are testing and changing thing), and never see the problem. This is why it is so unpredictable.
The interesting thing is that everything seems to work during this condition. If we turn a device on or off in the admin or run a scene, the devices seem to respond and all is well. Programs appear to run as expected. It's just that we can't see the state of any devices, so we don't know their status, ramp rate, etc. It sure is annoying and unpredictable. As of now it is doing this again, so we aren't going to change anything in the programs or scenes for fear of screwing up something. We just end up waiting until the gremlin goes away.