Hello,
Try Updating the Dell drivers
OR / AND
Try Uninstalling Dell Embassey Trust Suite.
I would suggest you to Open a Case with Symantec Technical Support and be ready with the Full memory dump.
You would have to call symantec or log a web case.
QuickStart Guide - Create and Manage Support Cases in SymWISE
http://www.symantec.com/docs/HOWTO31132
How to update a support case and upload diagnostic files with MySupport
http://www.symantec.com/docs/TECH71023
Hope that helps!!