First, I'd like to say thanks to everyone who has taken their time to read through my post, check their boxes and report back.
I've noticed the slowdown on mine for some time, I'm not sure at what level it first appeared. IMO, and this was sorta confirmed very early on, but the box was released before it was ready, so there's been many bugs over the life of this box.
I like the box, but when I first saw the big red reset button, well, the alarms started ringing in my head that I was in for some trouble.
I've found that by pressing the reset button in the mornings when I first wake up cures 99% of the problems I've experienced over the small amount of time I've had this unit and the small amount of time it has existed.
Mostly in the afternoons or evenings is when I start seeing the slowdowns, but by resetting in the mornings, I've noticed almost no slowdowns, no freezing, no lockups.
The reset button doesn't cure the group/folder problem though.
another bug I've had since the very first day of this box, and it's not one that most people would not see, is when I turn it on first thing in the morning and view my locals, the aspect ratio or display mode (I can't remember what it's called)
is messed up. I have two black lines on the sides of the picture. There is a setting in the menu I have to go change twice. for some reason, the box changes to another mode even though the settings are correct. If I change it to something else and then change it back, all works fine. It has something to do with HD settings and the 16x9 thing. I'd have to dig more into the menu to see exactly what it's called.
I do not run HD TVs whereas most people do, so I think this is why this bug really isn't well known. but if you are running a standard TV, you've probably noticed it before. I contacted DN in the beginning about this and a few other things, there solution is always "the big red button".
no need to call them, just press the button.