from a few posts that ive read, some people have compatibility issues and random problems with their r4s. but i have no problems whatsoever. like kirby super star ultra screwing up on the r4 and a list of other games i cant think of. is anyones r4 working as good as mine? EDIT: also i want to see if my r4 does have problems so could anyone give me an idea on how to "torture test" my r4?