I upgraded the OS on my Bold 9650 2 weeks ago to the latest version. Afterwards noticed phone felt hot and battery life was less than a third of before. Now dead after 5-6 hours. Movement between apps or around the screen more sluggish. Went out of state for a weekend and the battery life was back to normal until came back home. Could the new OS cause my phone to think it is in a different location and try to roam all the time? I don't appear to have any apps running in background that I can tell. Replaced battery and made no difference. Any ideas?