Do you mean like when you're about to fight, the screen seems like it's freezing? I've had that problem before, if at your emulator the # % is still going up and down, then that means it still works. I think when you're about to go fight Palkia, you're supposed to wait a bit or press a crapload of random buttons ( that's what I did ), for the Azelf, Mesprit, and Uxie to do something. Ehh, I forgot. o_o;