Hmmm, I don't see any need for pics, it's enough just to say that it flickers (okay, correct me if I'm wrong). Some people says that this can be solved by setting tripple buffer on, haven't tried it, though.
Oh, and the battle screen can be cleared using "Set Buffers Black" framebuffer, but be careful, though, as it screws up the game at some certain points. Just ignore it.