I am also experiencing this "lockup" of the Humax 1010S - the latest being today, 5th May. Currently the box is frozen on the program that was being watched at shutdown last night. Apart from the volume control, nothing else is working on the remote or on the box. This has happened on three occasions in the past week. Until I read this forum I was about to take the box back to Currys. I will now unpack the box again and try the factory default option mentioned earlier on.
I also have an Echostar HDS600RS Freesat box which is not experiencing any problems. This makes me wonder who is doing the coding? Is it the manufacturer using a spec. supplied by Freesat, or does Freesat supply the actual code?
My experience of Humax over the years is that they have put together some very good boxes. However, they do seem reluctant to keep people up to date whenever problems occur - responding on a piecemeal basis to individuals rather than putting out "alerts" when problems arise.
I also have an issue with the 1010S coding, hence my query above as to who is carrying it out. It takes far too long for the software to load - 30 to 35 seconds, which I consider to be inefficient. There are also too many keystrokes required to carry out actions in the EPG. All very irritating when you sometimes realise you are missing the start of a program you wanted to watch.