I have a similar issue to still resolve. After obtaining an RFX9600 2 weeks ago, I set up 3 of my components using rs232 connections and serial codes that previously worked with my system. Sont CX777ES DVD player, a Sunfire Theater Grand IV processor/receiver and a Toshiba HD-DVD player HD-XA1. When sending any code the system seems to repeat the code between 8 and 14 times. No matter the command. This is when using both manufacturer supplied commands as well as those found on the internet. Anyone else encountered this issue and if so, have you found a resolution yet? Don't know where else to turn. Thanks.