Since I took the 4.3 update my phone has been slow to react, and wake up. I have a voicemail notification that keeps going off and then immediately disappearing. I checked, and have no voicemails, it went off 6 times today. It has froze up on me several times, yesterday I had to pull my battery for the first time because of it. I am completely stock, is anyone else having issues like this? I love the new UI, but hate these issues.