I had a problem with RC4 where it replayed the timeshift buffer when changing channel. This was fixed on RC5 but appears to be still there when I go to/from an HD channel. I see a short flash of the curent buffer just as the channel switches. It clears up but is annoying. Only occurs when going to/from HD channels (BBC/ITV), HD to/from HD works as does SD to/from SD.
logs attached
logs attached