I also frequently get a Network Interference Error but again, only when accessing the Samsung Store and trying to download apps. The Netflix app streams HD video perfectly.
I'm having some problems with the Smart Hub and the Samsung App store in the my new ES7500 SmartTV. I have it hard wired via ethernet cable to the router and can watch Netflix videos via the Samsung Netflix app perfectly in HD so I know the network connection to the TV is working fine and high speed. However, all the content in the Samsung Apps store loads very slowly and some of the apps don't download at all.
Any idea what's going on here? For instance, I clicked on an app from the list and it sometimes takes 30 secs to 1 minute to even go to the app page. I hit the download button on a 15MB app and it has been over 20 minutes and it still isn't downloaded (didn't time out, doesn't show progress - lots of usability issues here as well).
Lastly, this TV cost $1500 and only has an embarrassing 755MB available... I would gladly have chipped in the extra $35 for 8GB, this is absurd. And Samsung Support tells me that there is NO WAY to increase this at all ever never.
Regardless, I just want the Samsung Apps to work. Currently it seems like a network issue with the Samsung Store. Are there any network diagnostic apps for the TV? What is the address / IP of the Samsung Store so I can trace and see if it is a routing issue or something?