Until you've had it a year, and they then tell you that the box is now yours and if anything goes wrong with it they will charge you to come and look at it!!
Depends on the problem.. we could prove ours was caused by faulty update and they repaired it for free. It's also still covered by the Sale of Goods Act, which can cover you for up to 6 years depending on the circumstances.
There is a monthly charge if you want to use the part of the box that lets you record. Without paying monthly you will be able to watch free to view channels but will not be able to record anything on to the box which is really the idea of having Sky +.