YES!!! It's not just me. Only since iOS 7 has it become so bad. True, under iOS 6 you'd eventually come across the app refreshing when you went back - but that was like a good 1-10 minutes. Now, if you're not back within the app in about 30 seconds, it's gonna refresh. And it teases you buy showing what you had open previously for about 1-3 seconds whilst it just sits there doing nothing. I switch between apps a lot to compose text, emails, pictures, etc and it's totally reduced my productivity. The worst part is that I can't go back to iOS 6 - and given that not many people are commenting about this (so a fix is unlikely soon) - so this has seriously pushed forward my thoughts on a move over to a Samsung.