The card works well on the XL, save for the fact that I can't seem to close the case without it shutting off. Sleep mode doesn't seem to work. So, ok, maybe "well" isn't the best choice of terms. The company says they can't duplicate the issue. Running the 3.8 firmware, all else behaving nicely. Anyone else getting this problem? I've used the iTouch without issue on the Lite, but more and more folks seem to suggest a card that will be able to keep up with the firmware wars. Suggestions?