Here is an recent article called "Rethinking the process of hard-drive sanitizing" by computer guru Fred Langa. It seems to be right up the alley of what information you're looking for. Also, for those interested, you can subscribe to their newsletter while at the web site.
Rethinking the process of hard-drive sanitizing
About Fred Langa
Fred Langa is senior editor with the online website "Windows Secrets." His LangaList Newsletter merged with Windows Secrets on Nov. 16, 2006. Prior to that, Fred was editor of Byte Magazine (1987 to 1991) and editorial director of CMP Media (1991 to 1996), overseeing Windows Magazine and others.
__________________
ARE VILLAGERS OLD OR ARE THEY RECYCLED TEENAGERS
At my age rolling out of bed in the morning is easy.
Getting up off the floor is another story.
"SMILE... TOMORROW MAY BE EVEN WORSE!"