ok i just updated to this about 2 days ago and my phone (iPhone4) i have been haveing slow downs with the performance, and the data with internet is slow. i cant load youtube, safari doesn't load, or when it does it takes way to long. im also getting a data connection lost when i have full bars, i have reset my network settings twice, and i have turned off my phone multiple times. if i have to ill do a restore but i was comeing here to see if anyone had similarproblems.