So I know this has been a problem for a lot of people and I have seen some pretty random solutions, but none have worked for me. I have an iPhone 4 and an iPad 2. Both are running their latest version of iOS 5. My Macbook has the latest version of iTunes installed. This problem has lasted since the previous version of iTunes as well, however. Basically, neither of my iOS devices will sync. I have tried both syncing over wi-fi and USB cable, and I have had no success. Both devices get stuck on the first step, "Waiting for sync to start." Eventually it will time out and quit. I have tried all of the solutions such as turning off the phone, quitting iTunes and then restarting everything and retrying. Nothing has worked. The only thing I have not tried is uninstalling and reinstalling iTunes as I've read in multiple places that reinstalling iTunes is pretty much never the solution. Even though I know it's not likely, I'm worried about losing information out of iTunes if I tried that. So I'm hoping someone has another solution for me.