Sky, No I didn't have any of the problems that others had with 4.3, so that is why I didn't hesitate to upgrade to 4.4 I was really surprised when
I played the first song and it was way behind the music and then would try to catch up in the last line, I messed around with it a little and changed my windows setting to windows classic like someone had suggested in one of the posts, that did help a bit but not enough still had lyrics out of sync. I would tell you to go ahead and update, and see just make sure you don't lose your other copy that is working correct. You can always uninstall 4.4 and go back.
