My playlist keeps jumping back
I will be listening to a playlist on my iPhone 4s for a few songs and then pause. A few hours later I will come back to the music App and press play, but it will start playback from the song that I started with last time. So I have to skip any number of songs to get back to where I left off on the playlist. It does this with playlists or when I listen to my entire library on shuffle. Sometimes it keeps jumping back to the same song, no matter how many times I've paused and restarted. Every once in a while it will remember where I left off, but 9 times out of 10 it does not. This is really annoying since I want to listen to the whole playlist, but have to keep skipping through songs to get back to where I was without having to listen to repeats. Any ideas?
iPhone, iOS 5.1