If you’re getting the following error:
Log Name: Application
Source: Microsoft-SharePoint Products-SharePoint Foundation
Event ID: 6398
Task Category: Timer
The Execute method of job definition Microsoft.SharePoint.Administration.SPSqmTimerJobDefinition (ID b6794ffa-87e5-4893-b3a3-107234d3b574) threw an exception. More information is included below.
Then load SharePoint 2010 Central Administration and navigate to Central Administration – Job History, change your view to ‘Failed Jobs’ and you should see the job in question.
In my case it was the ‘CEIP Data Collection’ and another article led me to disable the ‘Customer Experience Improvement Program’:Central Administration – System Settings – Configure Privacy Options (Under “Farm Management”)
Finally, disable the Timer Job itself
Update: Micrososfts official answer http://support.microsoft.com/kb/2616940