I installed the latest upgrade for my iphone. Now my bluetooth doesn't work. I went to the settings, selected general, bluetooth, then switched it from off to on. the little spinning circle thing came on and spun round and round and round.... and round and round and round.... well, you get the idea. I've never had a problem with using my bluetooth headset before. Anyone else experiencing a similar problem? I've tried restarting the iphone with the same results.