I agree with m0_joe...I'd exchange the device and give another one a try, if you're still interested in having a Kobo.
I pre-ordered mine back at the end of March but ended up cancelling the order when I found out the black one was coming out. I got my black one on May 10 and have had issues, mostly with the battery, and am now to the point where Kobo is exchanging it for me. I'm very hopeful that I get better battery life out of the second one, and if I don't, I'll probably just exchange it for another one through them. A headache yes, but I'm a fan of the device so I'll deal with it.
