Can confirm UI responsiveness is much better with 1.10b1. I was one of the most critical of the lack of responsiveness in this thread 3-4 weeks ago, I can def say it's improved! It could be made even better ..but I'm happy with how it is now. I can flick much faster without any misclicks or hangs, and I'd say it's pretty close to how responsive the stock J3 is. I don't think I can sense a difference between the two. The scrolling bar on the far-right side is also much easier to drag. Even with the leather case. These improvements make frequently switching between songs much easier. Good work cowon! I have no problem recommending this player to anyone, now. Now lets see some of those missing features make a comeback, such as the ability to scale text/lists, eh?