Must confess I looked in earlier and wondered how internet connectivity affected tv listings. Without any set up spec I decided to swerve the question because I was busy sorting the dog's dinner out. Are you using a sky or freeview box or is it a smart tv hooked up to your hub? Either way I would switch of either the tv or the box at the mains and do a reboot. Some times after upgrades , just like a pc,(although a pc does not have to be switched off at the mains) your system has to be turned off at the mains and re loaded.