I just recently got an M3i Zero, one of the supposed new batch that just came out. The thing flashed without a hitch and plays nearly everything perfectly in my XL. But I'm having an issue with sleep mode. I did some google searching and found some topics here, but they all have to do with the system shutting down if you put it in sleep mode. I'm not having that problem. My problem is it doesn't go fully into sleep mode and stay there. The screen starts to flicker and the sound continues to play very sporatically, like somebody is pausing and unpausing it really fast. Nor does the battery indicator on my XL dim. After testing it on my regular DSLite and with a game that plays a custom sleep sound, I deduced the problem: It's going in and out of sleep mode rapidly. The only time it ever seems to stick is if the charger is connected and the battery is completely full, but this only lasts like 5 minutes. I'm wondering, has anybody else had this problem and knows whats causing it and how to fix it? I'm not really all that bothered by it if it can't. Just a bit annoyed, since my playstyle is to usually leave the system in sleep mode constantly when playing a game. I'm just afraid to put it in sleep mode because A) If it's coming on and off rapidly like that, it's not exactly conserving the battery, and B) I'm worried that the rapid on and off could damage the DS or something. Anybody have an idea what might be going on here?