Yep, it sounds to me like you've got something running that's draining the battery power. the internet tablets use pretty much zero energy when truly on standby. i often even leave the browser running overnight and wake up to find the battery power right where i left it. when i remember, i switch to offline mode. BUT if i leave a game running overnight--hexahop is a prime example of this--the battery will drain completely and i'll find the tablet shut down in the morning. i believe hexahop's animated water keeps the processor humming along and trickles the battery power away.