I have been running the 1170 version almost a week, and aside from the occasional wifi drops, it has been working pretty well. But last night I was charging the tablet (turned off) and turned it on to check the progress. It booted to the Wowhome, but the time & date, and weather widget had reverted to Beijing. I started to change the settings again, but then I was notified that Titanium backup and Autorun killer had crashed, and the tablet locked up for about 30 seconds. I rebooted several times but kept getting similar errors. I tried the reset button, but it didn't help. Finally I ran a factory reset in recovery mode and then it booted and ran normally again. I have no idea what caused this to happen. I hadn't made any major changes to the system. I hope it wasn't some hardware failing.