Windows XP Service Pack 2 introduces a feature called "Data Execution Prevention" which can cause the World Community Grid agent to give the "agent paused" message after the server download. Until we find a way to correct this problem, you can work around it by turning this feature off for the UD.exe program in the WorldCommunityGrid installation directory. Go to Control Panel-> System-> Advanced-> Performance Settings-> DataExecutionPrevention. Either disable DEP for all programs or add the World Community Grid Agent in the list of exceptions. Click on ADD, and locate the UD.exe program within the install directory, the default being "C:Program Files\WorldCommunityGrid\UD.exe". Click Apply. Then reboot so that the new setting takes effect. Until we fix this problem, you will need to repeat this process if we update the WorldCommunityGrid agent. We announce these updates in the news area of the member area forum.