I've been monitoring this thread as this "bug" has reared its head on our 722k also, but I have noticed something the past three nights. Each night, at exactly 11:00 est, the guide speeds back up again. The second night I thought maybe there is something to this, then last night, it did the same thing. Weird and frankly, I can't really explain it, but it defintely speeds back up at exactly 11:00 for me.