Don't have any problem with mine, v. 1.5. It's really better.
I didn't recharge it since update on 24th (it showed then 90%), just plugged it the time to put ebooks on it, and test for different trees of folders.
I read about 1500 pages (as far as I can count, as the Cybook doesn't display page numbers, but Mobipocket Reader does it...), and it just falled to 80%.
So for me it's a great improvement, on the contrary.
