Share your experience!
I start to feel very disappointes from my phone 
Could you elaborate on the issue?
Yes i can. Just try to buy the phone and use it couple of days with the new 4.3 softwear and come back to this forum to talk again.
I don't quite follow
Befor the update the device was better
Boot your phone in safe mode,see how it goes:
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008
@followme wrote:Befor the update the device was better
I had the old Media Server problem when I first got my SP. I disabled the haptic feedback (touch vibrate) and all the applications I don't use. It's quite tricky to pin down the cause as it can be one or more apps causing it - I never did manage to find the culprit(s).
Starting in safe mode sounds like a good idea - I didn't try that myself, but it'll be a useful diagnostic.
I am with stock @4.3 , no apps installed!!!!!! cause of the 4.3 bugs, i wanted to see from where they came from. But they were there and with the stock android.Now downgrading to .245 firmware. I don't think the problem is in my television, I think it is outside my tv screen.
blackbox,do try it and keep us updated.