I am hoping some of you can help me with this problem, or confirm that it is just a software bug. I recently purchased a 721 as part of the new promotion, and I am happy with everything but the caller ID feature. If I am watching TV normally, it seems like the caller ID only works about 10% of the time. However, if I am in any of the menus, or if I am doing PIP, the caller ID works 100% of the time. I have tried reboots, my switch is grounded, and I have trield my 811 in the exact same location and the caller ID works flawlessy (yes, I just said '811' and 'flawlessly' in the same sentence). Also, it is not just the pop-ups that don't work - when I go into my call history, the calls are not their either. Any help would be greatly appreciated. I am thinking/hoping this is a software problem, but I need to know so that I can get a replacement if it is actually a hardware problem. Thanks