Just registered in order to add to the experiences in this thread. I'm running the latest (3.5.6 build 6917) eyetv software on a powerful Mac Pro 2010. I have an eyetv hd connected to the machine via USB. In the last month or so, I've noticed zero-length recordings as well as an occasional inability to "open new live tv window". As was the case for a user above, simply unplugging the tuner USB and reconnecting it resolves the symptom(s). I first suspected a USB hub...