I decided to make the upgrade to iOS 4.2 beta 3 about 2 weeks ago, and it's been working great and perfectly, without errors. Well last night, it froze up, so I reset it, and it was working fine except the battery died.... REALLY fast. It was around 9 so I turned off all my running apps, and just plugged it in, thinking it would be at 100% by morning. It went from 10% to 24% in 8 hours, and I kept it in for the day while I went to school. I got home at 3, and it had only charged 20%..... why is this? Should I reset the iPad again? Is it the OS?