strange problem with my 921 since a recent new software upgrade. Many of my timers are recording on the wrong day. For example, a recording that is set for thursday night doesn't record on thursday, but then records on friday. If I look at the guide, the little red record dot shows up on the right day and time, but the recording isn't actually happening at that time. Some of my recordings record correctly, but some record a day early and some a day late. Has this happened to anyone else?