The two apps in which I am experiencing this problem are "Math Age 3-5" and "MeeGenius". I have had an opportunity to test the former on a non-jailbroken device, on which it behaved normally. In my case, both apps appear to "think" (for lack of a better description) but ultimately do nothing. With the former, the thinking never ends, and I have to force close it. With the latter, the thinking takes the appropriate amount of time, but there is nothing to show for it when it is done. Any thoughts or ideas?