After not using my phone at all yesterday, I picked it up to find the battery had almost completely drained, though I had put it to sleep using the same routine I do every day. As I puzzled over this, I started noticing these other issues. *The Home button no longer brings me to the home screen, in fact it does nothing other than- *The phone no longer uses my pattern to unlock, though it is still enabled in the settings. I can press any key (including end) when the screen turns off and it just brings the screen right back up (whichever screen/application I was on last). This is the same whether it times out or I hit End. *The Search button is equally as ineffective as the Home button, only functioning to turn the screen back on. *Holding down the End button no longer gives me the options of Silent/Sleep/Power. Only Power is available. I hadn't installed any applications recently enough for them to be logical triggers. I had downloaded 1.6 a few days ago, several days before issues began. A suggestion I've gotten- using Spare Parts to set the End key to sleep still doesn't cause the phone to actually sleep/lock. Setting it to "home then sleep" causes the button to not function at all. I'm attributing this to the whole "1.5 ONLY" thing, though. I've searched through the forums and have found a couple threads with some common issues, but none that quite match mine. If there is a thread with this exact problem, I apologize for missing it and would greatly appreciate a link so that I may be on my way.