Strangely the same thing just popped up for me. I've had the phone a week and never noticed dlna when looking at my battery stats. Today the phone appeared to be using more battery and dlna was the top offender for battery usage.
The app will not stop, I've cleared data and cache, tried to force stop and it just won't. I'm really not sure what is using it.
I added a lockscreen widget for the quick remote app yesterday night. I've removed that to see if it was causing dlna to run more, it doesn't seem like it should but who knows.
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