folder action interrupts user activity

I have a folder action which watches a folder and copies new files added to it to anther folder. Whenever a file activates it, the script interrupts activities I may be in the midst of while it copies the file. Is there any way to remedy this abhorrent behavior of the folder action? Here’s the code:

on adding folder items to theFolder after receiving theItems
	repeat with anItem in theItems
		tell application "Finder" to duplicate anItem to folder "Storage:temp:" without replacing
	end repeat
end adding folder items to

Model: powermac g5
AppleScript: 1.10.7
Browser: Firefox 3.5.3 GTB5
Operating System: Mac OS X (10.4)