ISSUEWhen using a "Pause for" action, the workflow might pause 5 - 10 minutes longer than configured.
Option 1Restart the SharePoint timer service.
Option 2Download the Microsoft SharePoint 2010 October 2011 CU.
If the issue persists after downloading the October CU, it might be caused by a Microsoft SharePoint workflow engine bug. For more information, see SharePoint Workflow Engine bug. This known bug can affect some Nintex Workflow and cause them to freeze under certain conditions.
Test a basic SharePoint designer workflow with a delay. If your issue is also occurring in the SharePoint designer workflow, this suggests there is a greater issue with this service. Contact Microsoft Support for additional assistance.
Note: Nintex Workflow uses the SharePoint Workflow engine. If these issues are occurring in Nintex Workflows, they will also occur in SharePoint Designer workflow. Normally, a simple SharePoint Designer workflow with a Delay or Pause activity will result in the same behavior and this test can be used to demonstrate the problem requires Microsoft Support.