The Smart Hub issue is now fixed for me.
I reset the Smart Hub today after work (I had been using Australia for country code so I could get the game app I'd been playing), and it finally downloads all the apps and no longer gives the error message. I successfully downloaded an app and the game and the Smart Hub connection test is now successful.
I'm not a Netflix user so I can't confirm Netflix, but I read reports about Netflix working for others in AVS Forum/SEK-3500 thread.
I can confirm that Netflix is also now working after a quick sign out/reinstall of the Netflix app.
It's a shame that the Samsung technicians and moderators aren't informed of what defects exist on their products. You would think they would know what issues are out there and what their development team is working on. There should be more transparency for the customer. They should let their customers know that the issues are known issues and they are being worked on urgently. The smart hub restarts and the system resets are frustrating when customers have already tried these tasks numerous times. The only answers I ever got was the equipment is defective please return it for a new one or we can send a technician to your home at an additional cost to you. Unacceptable , especially when customers are informing them that other users are having the exact same problem.
This is was a software issue on samsungs side which we all said from the start and it was rarely acknowledged.
While this SmartHub problem seems resolved, I lost the connection with my Sony STR-DN 030. My audio out list no longer shows this AVR choice when Menu->Sound->Speaker List now only shows 3 options (TV Speaker, Bluetooth Audio, Audio Out/Optical). There used to be a 4th choice thru HDMI.
Has as anyone else noticed this change?
Yes -- I see that as well (my receiver doesn't show up anymore). Also, I still get the incessant smart hub is loading, try again later message. None of this occurred before I made the mistake of upgrading the firmware. Terrible product now. I wish I could go back to the old firmware.
Update, I think the sync plus app has something to do with the delay in firing up the smart hub. After resets of both the tv and th smart hub, I keep getting notices of new apps available, and it's always sync plus, and it never updates, even though I tell it too.
I can confirm that this issue is fixed along with the netflix issue. As the original poster in the forum i'm marking this as solved. Thank you everyone involved for there help in getting this fixed