This has happened twice now. After putting my iPad 1st gen to sleep, and then when trying to turn it back on from sleep, I find that my iPad is completely dead, like I powered it down. I try pressing the sleep/wake button, but nothing happens. I have to hold the sleep/wake button and home button for about 10 seconds before it powers on and boots itself. Like I said it's only happened twice. Most of the time the iPad sleeps and wakes without any issues. Just wondering if anyone else has experienced this. I'm running 4.3 now.