Is there any way a JB tweak could have messed up this app? I don't remember installing any extra tweaks lately yet I keep opening up the Health app and it will display no cards or source data. Then it will randomly display it all and when I go into a specific data source it just shows the spinning circle. I have to reboot for any cards to show back up but the source stuff is still broken. Is it possible that Apple is using it as a way to force people to update? Can they intentionally break things or update certain apps in the background to where you need the most up-to-date software to have it run right? I could have sworn it worked fine before. I mean it even did earlier today.