Symantec File Share Encryption creating unnecessary network traffic caused by PGPfsshl.dll. The PGPfsshl.dll does the overlay for windows icons in association with Symantec File Share Encryption and is tied to Windows Explorer. Customers have brought to our attention that disabling the Symantec File Share Encryption via Consumer Policy on the Symantec Encryption Management Server does not disable this functionality and actually makes it so you can't disable this feature.
Symantec Corporation is committed to product quality and satisfied customers. This issue is currently being considered by Symantec Corporation to be addressed in a forthcoming version or Maintenance Pack of the product. Please be sure to refer back to this document periodically as any changes to the status of the issue will be reflected here.
The following is a known work around for this issue which should only be used if you do not have any clients that need Symantec File Share Encryption functionality:
Symantec Encryption Desktop
Windows XP, Windows Vista, Windows 7