Has anyone had any odd network connectivity issues? I've had several cases where I've been browsing through titles on the Netflix or YouTube apps, and suddenly it acts like it has no network connection. If I run the network diagnostic, it says there is no connection available (or something to that effect). Sometimes it'll fix itself, sometimes I need to power the TV off, sometimes I just give up. This has only happened when browsing titles. Never problems while streaming. I've had it happen via wireless connection, and wired. Other devices on network have no problems when this occurs.