I have A 3GS 32gig running 4.0.1 and a couple of days ago i noticed that when i would load websites or use youtube and turn the phone to go into landscape view that iphone does not switch automatically any ideas why? It stopped doing it one day. Could it be that something is broken or is there a setting that i need to turn on for this to be active again? Thanks for the help!
Mine does that sometimes like on YouTube you have to wait sometimes for the video to start before putting it into landscape mode as with safari. I don't think anything I'd broke, it just needs time to realize what position your phone is in.