Just wondering about the new Instant Rewind update on the Sky + box. Does the Sky + have some sort of secret solid state memory or is the 15/30/60 minutes of programme info written to disk. I never switch off my Sky + box, which means if I implement instant rewind and it is written to disk then the disk will be constantly writing. If this is the case then with this facility theres more likelyhood of serious disk failure and I belive there's only a one year warranty with the box. Maybe I should just stick with the live pause.