I take back my previous comment. Sync to a computer doesn't seem to help. I tried a restore, and that didn't help. I did a fresh install after an erase all data and settings and that "solved" the problem. However, I have too many apps and configuration to even try a fresh install as a real solution. I am going through another restore. My current guess is that the problem happens (to whomever it happens) on upgrade from earlier IOS). Perhaps some configuration carried over is not cleared correctly by IOS 9. Let's hope Apple provides a fix.