I am sort of surprised to not be hearing more from Mike regarding the camera thing. Everything else people are talking about problem-wise (slowlness/whatever) seems sort of scattered and inconsistent. R3Born is very fast for me, just the damn camera thing.
Re: The text input scroll thingy... it happens to me every once in a while. There is an option somewhere (my phone is not in front of my at the moment) to turn that off. I just disable and re-enable it and it works again.