Yeah if dolphin browser is using as much as the display something is wrong. I don't know what, but something...
I'm still on my DX, I've been unplugged for 6.5 hrs, have 60% left, haven't been doing anything but flipping between AC and my FedEx status page (still in Memphis), and my screen has used 46%, Dolphin HD 13%. Don't know how relevant the comparison is, but equal usage between screen and Dolphin seems odd...