I've had the Logitech Harmony 655 for about a month now but a problem has just emerged that didn't happen before completely out of the blue. When I press the arrow buttons whilst on the TV guide on Sky+, the on-screen marker moves twice instead of once. It's not because I'm holding it down or anything like that. I checked the delay times and tried loads of different combinations with no effect whatsoever. I've been messing around with it for about 2 hours now and I'm at my wits end! Currently the 'inter-key delay' time is set at '0' though I've tried it at 100, 300, 500 and 1000 with no change. Any ideas? This is the only thing causing me problems. The control works perfectly with absolutely everything else apart from this!