i purchased my 820 as soon as they hit the market about a year ago. It sucked. One of the worst purchases i had made. It felt like nothing worked particularly well, but the big issues was that it was almost impossible to use the touchscreen. I really had a hard time understanding how any company could release something so bad. The postings on this forum did not give me much hope either. Here is the good news. I RMA'd it, and got my replacement (refurbished) device about a week ago. Night and day difference. I can actually move from screen to screen, and when i hit the off button, low and behold it shuts off. Holly cow, i can even enter my email address using the little virtual keyboard. I'm sure there will be some of the other issues that i was not crazy about, but it has gone from a constant frustration to a very usable device. I might even learn to like the damn thing and start singing it's praises. Just an FYI.
Kevin