If I let my phone sleep long enough to go into a "deep sleep" it is very slow after I unlock it. For example, my phone has been in my pocket for a half of an hour and then I get a new text message. I turn on the screen, and slide to unlock, but I can't pull down the notification bar for about 10 seconds or so, I have to wait for the analog clock to set the right time (which it lags through) and then it's fine after that. I don't have this problem if I lock it then unlock it right away.