Hi All, tl;dr - Regular power down to standby could improve tv guide performance. Just thought I'd pop this in here in case it helps anyone. Last year I installed the custom firmware which ran like a charm. Towards the end of the year I noticed the guide was getting slower and slower, painfully slow (wait a couple of minutes to scroll down one line), interestingly the speed of the media menus and accessing recordings was fine it was only the tv guide that was a problem. I assumed it was because of the version of the custom firmware which is described as supporting bbc iplayer but being a bit slower. Out of frustration I tried the old "turn it off and on again" that gets repeated by any tech support and there was immediately a huge improvement. By coincidence when I installed the custom firmware I had set the box to just stay on all the time. I can only assume that perhaps something is slowly leaking memory on the box and a reboot flushes the RAM. I have now set the box to power down to standby every morning at 2am and so far speed has been back to its original nippy performance.