My EZX10RF issues were resolved after SimpleHomeNet upgraded the firmware for me. It works great now.
I created a video showing how I linked an ActiveEye X10 motion sensor to an Insteon SwitchLinc using the EZX10RF. Here’s the link:
http://www.metacafe.com/watch/1424805/home_automation_occupancy_sensor_using_the_ezx10rf/