Well, I came home to another dropout today. In fact, I think it occurred only hour after I installed the latest driver (the previous night) and I just did not notice it (the rest of my family did - came home to my wife saying "the computer had no internet all day"). Here's the screen shot. Looks like the errors started occurring about 1 hour after I installed the driver last night.
Right clicking and running the troubleshooter fixed the problem (although it seemed to find some other things too and I did not capture all the messages).
I really do want to get this to work - because when it works, it is fast! Checkout the transfer times I was getting on a large file. 130 Mbps. Yesterday, I was getting 200 Mbps right after installing the new driver.
I'm going to uninstall the driver and re-install the version with PROset. I'll keep the default settings until it happens again, then start tweaking settings, then start disabling bands - either on the card or on my router (or both).
