Is anyone else experiencing a spike in cell data usage since upgrading to iOS 5? I am on the ATT 200MB plan, which is always plenty for me, I am usually on wifi. I got billed for overage and looked online and can see that my phone is SENDING chunks of data, (5, 10, once even 40MB) and it just says "phone" for who it is sent to. Am I missing something here? Is photo syncing doing this? I have enable 3G turned off in the STORE. Any help would be greatly appreciated.