I'm having a similar problem with my ipad 2, system 6.0.2 and it has been getting worse lately. Last night when I shut it totally down, it was at 21 percent. This morning when I turned it on, it was at 18 percent and then within the first 10 seconds, dropped to 17 percent. What would be causing battery drain while it is totally shut off. I have it on now but in sleep mode and haven't even used it today yet and will see what happens. Thanks.
Mine is still playing up. I can get probably 2 hours use out of it before it has to go on charge. It wouldn't be so bad if it was an old machine, but this is less than six months old! AND it's only been doing it since the new operating system was installed. How can I get the old op system back? Please!!!!!!!!