I Found out something interesting about Symantec's latest Antivirus product the other day which I thought may be of interest to some.

Apparently when a machine boots the DoScan.exe uses a large amount of memory and CPU. When the DoScan.exe completes RTVScan is using about 40MB of RAM.

The solution from Symantec is as follows:

One possible workaround is to create a reg key and import it to each user before running the SAV 10 install. Creating and setting CreatedUserQuickScan to 1 before running the SAV install should prevent the creation of the Auto-Generated QuickScan for that user.

[HKEY_CURRENT_USER\Software\Intel\LANDesk\VirusProtect6\CurrentVersion\CustomTasks]
"CreatedUserQuickScan"=dword:00000001