I've been doing that workaround of plugging/un-plugging - which seems to work sometimes. I'm hoping for a software update at some point to alleviate the issue as it seems to be a known issue. I purchased from Best Buy a while back.
It's obvious that it's a software issue and a known issue.. Roku hopefully will be more forthcoming soon. One can only try to keep the thread alive and hope for the best. This is customer service/response issue, especially if you haven't heard from anyone after a couple of weeks..