Unable to export a lib in SharePoint 2010

1) If you have Symantec Protection 6.0 for SharePoint Servers at SharePoint server 2010 and you are getting error message as "Unexpected ..." in command window and "Antivirus scan time out" in ULS log

Answer: After a long research I found that we need to stop the symantec service at service console and disable the "Symantec Protection 6.0 for SharePoint Servers" settings at Central Admin.

Double items in list or library

It is a strange that some of the times SharePoint have double items in particular list or libarary

Ans: This can be resolved by recreating the new view at that list/library