I have recently started having a problem when downloading any new apps from the app store through my 3g iPhone. It goes through with the download and then a screen pops up and says that I need to plug my phone into my computer to complete the download. I never had to do this before and now it says to do it with every new one I try to download.When I quit the download after that message appears, the icon for the new app that I tried to download is there on the phone but is grayed out and looks as though it is stuck in a download phase or something. When I plug the phone into my iMac it does not do anything special like finish the download. Anyone else experienced this problem or is it normal?