Playing on CycloDS Evolution 1.58b.
Game doesn't freeze per se, but after you get the PokeDex and return to New Bark Town, when your rival bumps into you and challenges you to a battle, it shows you as only having two Pokemon spots (one empty, and one with a Pokeball, since you only have your starter at that point) and the Pokeball just continues to spin and spin, effectively freezing the game.
Not that I particularly mind, as I'll be picking up both my copies Sunday morning, just thought I'd let whoever it is that fixes these things know what's going on with 1.58b.