Originally Posted by JSanders
WHOA... the hourglass could spin 20-40 mins before reboot... Don't pull the USB too soon!
One guy here yesterday was about to pull the cord at one hour, he finally posted back and said it took exactly 1 hour, 13 minutes, but it booted right up afterward. Be patient.
If you have large phone logs and message logs, it takes a while.
But in my case it looked like the unit was restarting itself every 4 seconds.