I don't know if anyone else has experienced this, but the last few days my 1100s has been rebooting itself every few minutes. I rang Humax support, and they said they had received several calls today about it.
They recommended resetting to Factory Defaults as a workaroud while the problem is being identified at their end. This seemed to do the trick. You don't lose your existing recordings, but you do lose planned recordings and other personal settings. All was fine until I tried using Showcase to set a planned recording, at which point the box started crashing again.
Another reset to Factory Defaults, and this time I tried using the iPhone app to set a recording from Showcase. This caused an immediate reboot.
I've reported this back to Humax. Maybe it'll help with the troubleshooting. For now, I'm just setting recordings from the programme Guide, which seems OK.