I've had my Droid for 1.5 weeks. So far I love it, but today it just died while I was web surfing. It was unresponsive in all ways. I removed the battery, replaced it, rebooted, and now it seems to be doing ok, but I have the "hourglass" circle in the upper left corner as if it's booting up. Should I be worried and replace the unit at Verizon? Got the update this morning. Not sure if software or hardware related. Thanks!