Please, all folks reporting an issue with HLS streaming - the URL's that I passed on to our video engineer last night are not causing any problems. He is testing on a Roku3. Can each of you having a problem dropbox me a link, via private message, a .zip file of a channel that reproduces your issue?
My best guess is that this issue may have something to do with metadata in the array you are passing of video information, since the streams themselves don't cause reboots on the 6.1 firmware release.
Here is how you can fix the crash issue: Just place your current stream address.m3u8 and create a blank notepad file and put that address in there and name that file mystream.m3u8 and put that file on your server. In your roku xml file place the previous stream address to this newly created file like: http://yourserveripaddress/hls/mystream.m3u8. The reason is Build 5177 does not like some m3u8 urls and is picky. So you can fix it by doing the way I just explained. It fixed the crash and channels will playback without any issue. This is always a good idea when you have a long URL address. Just make it as simple as possible.