I am amazed at people who grab a "Developer Preview" and then complain when they find a few bugs, hence why Nokia says they wont support the device as long as the Dev preview is running on it. Most issues you encounter when running the previews can be fixed by doing a Hard Reset, I always suffer through first day so phone can get a latest backup then reset in the morning. Gears taking "forever" means you have a lot of crap, be patient. Phone getting hot and severe battery drainage, yeah I can understand, mine did that too, but again, Hard Reset will fix. Now there will also be the random issue that only a few people get, WiFi issues, Connection issues, and this could boil down to carrier changes that will be included in the official update, or other unique differences. or even a bad download, and well .. that is a chance you take on a preview. my point is dont complain about beta software not being ready for prime time when you are told it is beta and to load at your own risk. ... Thank you
[edit] and the power button thing not working ... Hard Reset will not fix that, no clues, it is annoying, but is not a reason to panic, either use the double tap to wake, or press the power button several times, Im sure Microsoft will have it worked out for the next update