The following warnings are seen in the Notification server logs during the PMImport process.
Description: Another instance of Singleton Task is running
Description: OnExecute()- Another instance of Import Patch Data for Windows task is running, aborting.
This may also be seen with other tasks like: Revise Software Update, Microsoft Patch Management Import, Check Software Update Package Integrity etc.
Description: Task instance Re-Run Adobe Patch Management Import1 (1/1/0001 12:00:00 AM) is being put to sleep until 11/9/2009 1:41:32 PM. Instance GUID: 483d3573-5fd5-407c-9fbd-13dc31baaeb7
Description: Resuming task instance Adobe Patch Management Import (1/1/0001 12:00:00 AM)(483d3573-5fd5-407c-9fbd-13dc31baaeb7)
Currently multiple PMImports cannot be running at the same time.
Work through the following steps on the Notification Server > Console > Manage > Jobs and Tasks > System Jobs and Tasks > Software > Patch Management > Microsoft Patch Management Import