iPhone shows "offline" in Find My iPhone on icloud.com
My iPhone (iPhone 4 with iOS 5) -keeps showing up as "offline" when logged into my iCloud account and using the Find My iPhone feature. My device is certainly online, 3G working, and yes the Find My iPhone option is turned on in my iCloud settings on the phone. This was working fine with my mobileMe and pre iOS5. Any ideas? Thanks.