My iPhone 3GS was jailbroken, but after the iOS4 Golden Master Candidate (8A293) was released, I installed that. Since then the status bar continually displays a grey Wi-Fi icon on the left and (what looks like) 5:10PM in the centre. Any other icons from iOS4 e.g. the 3G symbol are displayed over the top. I've tried restoring the phone (iOS4) but they are still there. Any ideas why or how to fix it?