I purchased a DSi in the month of May. The "R" button just doesn't function whatsoever. I was contemplating sending it to Nintendo but decided against that. I was planning to send it to ToyRUs (where I purchased it) for an exchange. I don't care much about the DSiWare or the photos. I'd rather exchange it at ToyRUs because I'll get a whole new (scratch-less DSi )!. I was wondering whether I could exchange it at ToyRUs. The manufacter warranty is 1 year and Nintendo did say you could exchange it at store if defective. And I do consider the "R" button defective as I did not do anything that may have damaged it.