I just got a new 4GB 360 S-series two weeks ago (from Best Buy) and so far I love it to bits. I just have one concern, though it's not a terribly big deal...
Right now I have my Xbox hooked up to my computer's monitor through an HDMI cable, as my monitor supports multiple input connections. Largely because my monitor is HD while none of the tv's in my house are. I have noticed that when I'm playing my Xbox, if I put the game on hold and switch the monitor's input to, say, check my email for two minutes, when I go to change the input back to the Xbox, the Xbox automatically and instantly restarts. Is there anything I can do to prevent it? I'm not leaving the Xbox idle long enough for it to shut itself off, so I don't quite understand why changing something on my monitor is affecting it.
Like I said, right now it's not a huge big deal since I at least know to make sure to save before I switch the input--though it was definitely inconvenient the first time it happened!
Oh--if it matters, I'm currently using a Turtle Beach headset connected to the digital output through an adapter.