In a way I'm glad to see I'm not the only one, because Apple should be able to know the issue and fix it in the new update.
I'm also worried about the random battery drains I'm getting. Launch day was great, I used it endlessly messing around with it and still had 40% at the end of the day. Today I woke up took it off the charge at 6:30am and have hardly touched it and it's already at 80% at 11am. I've literally not touched it more than once! It's a bit worrying!
It's saying 38mins Usage and 4hrs40mins standby... I really don't know where these numbers come from!