I'm still having the issue, happened again today and a pull of the plug is the only thing to solve it. I also (for a while now) have the info ribbon pop up randomly whilst watching live TV and when chasing play the picture will freeze for a second then carry on. It appears to do this (the freezing for a second) when the next show is starting on the live stream.
Thanks for letting us know about this on the community.
I'd like to arrange for an engineer to look into this for you so I'm just going to send you both a private message which you will find if you click on the purple envelope at the top right of the screen.