I got to see a little debugging as I was trying to buy mine. The system largely worked but wouldn't respond to voice commands: It would mute the audio, but wouldn't respond with a voice prompt, or react to any voice commands. Pressing the hangup button returned control to the entertainment system. The guy said "oh just do a master system reset" (gear / gear / gear > scroll to bottom > master reset). Didn't work, twice. Took it to the service bay. (Goodness, they seem to move you to the front of the queue if a problem is blocking the sale). Turns out, it seems to cancel the reset if you aren't 100% patient: Don't touch anything until the screen goes blank, starts up, goes through the "Sync" progress bar (which looks eerily similar to the old Windows start-up progress bar… bad memories!), and reloads all the items on-screen…. Then turn the accessory off, and back on, and again be patient while it loads everything. Then it worked, and has continued working so far. Oh yeah, so does anyone actually know where the low-voltage battery is? As much as I'm willing to take their reassurance that the battery should never be touched except by a certified graduate from Hogwarts, I still want to know, and it feels strange not seeing it anywhere.