another potential issue I'm experiencing another random, hard to reproduce issue ffor last week or so. Whilst browsing web with microb, device loses track of focus. You can happily be browsing away and then it loads next page and nothing works. clicking/scrolling page results in haptic feedback but nothing else. text box is unresponsive. keyboard has no effect. my initial reaction was unresponsive due to load but that usually slows haptic response as well. I then found that the task switcher button still works. you can get out to desktop but widgets don't work. you can get to menu and launch apps but they fail to respond to input. power button launched its menu but desaturated and unresponsive.... then i turned screen off with slider on the side, turn it on again using the slider and everything starts working again.