Hi all:
After doing a little research on this problem, which I never had with the 3 G, there are basically two solutions. 1.) Take all pics holding the camera in landscape mode with the home button to the right. Putting the home button to the left will turn the pic upside down. 2) This one I like better. Download from Itunes an app called BEST CAMERA for $2.99. So, I downloaded it, took a pic in portrait mode on my iphone 4, from this app, and wow, the pic sent to my aol address was perfect as well as the pic to my Facebook page. Thanks to the person from another site who recommended the download of Best Camera. So, I am not going to worry about it anymore. Technically, it has something to do with the orientation of the picture, but I will leave that to others to decipher how it all works. So, for now, I am a happy camper.