I've searched the forum and all I've found to solve this problem is to uninstall and reinstall Nero.
I have Nero 7, my machine has Vista 64, 4gb of memory. When I use Nero burning ROM "copy DVD" my memory utilization started going to 100%. It never did this before and now it happens 100% of the time. Does anyone have a solution other than uninstall / reinstall Nero? Also, it works this way with all my burners.