Xbox problems which are leading me to drop a sledgehammer on it

Do you use a surge protector or power extension lead at all ? If so try connecting the Xbox power supply directly to the mains power outlet, It could be that the surge protector or extension lead is dropping power which would cause the Xbox to power off.

I have had three pairs ot TB's that have been nothing but excellent in build quality. Two wired chat pairs that I had no problems with, despite using them every night for a number of years and now the excellent 500's which don't have wired chat. No wires
no hassle. The wireless chat lead can get abused a bit depending on how excited one gets or if the controller gets dropped whilst still connected to the headset, I did that once and needed a new chat lead which TB sent me free of charge even though it was
my fault for dropping the controller (which i explained to them)

I try to contact them but it just leads me to the automated agent which doesn't understand the problem.

That would make sense but all my other friends with open nats have no problem connecting to these people, it is just me. which leads me to believe that even though xbox says its open it may not be.

I got the same problem, too. Any word from sledgehammer? xbox? COD? Want to know if there is an update to fixing the issue...