situation: battery life decreased significantly. previously, I was able to make it at least a day with moderate usage, (manual check email throughout the day, pandora radio for at least 4hrs, some internet mixed in). after card was installed, battery only lasted a couple of hours. solution: tried everything. checked settings to make sure auto-sync stuff was turned off. tried wiping the phone to start over. thought it might have been odd side effect of OTA. (i put the card in right around that time.) couldn't figure out why my wifes Inc still got good battery life and mine sucked. finally realized that i had a 1GB micro sd card in and she did not. i removed the card earlier this evening and the battery meter has barely moved in 3 hrs. AND THE PHONE GOES TO SLEEP FINALLY!!! hope this is the solution for others as well.