Hello All, I've been reading a lot of people getting erros while trying to check for samsung updates on the Captivate. I experienced this as well. I narrowed the problem to various Task Manager apps killing the "Device Management" task that is native to the captivate and launches after each reboot. When this task is killed, you will recieve the "DM Initialisation Error...Check your network or Sim Card" message every time you try to check for an update. Solution: Reboot and exclude the Device Management process from any of your task killers. Hope this helps!