Ive experienced the same issues with my WD scorpio blue AND the Seagate momentus 5400.6.
i posted on my blog rather than here, but here is a link
http://kyokushinnick.wordpress.com/2009/08/10/silencing-a-macbook-pro-hard-drive-for-2/
i posted on my blog rather than here, but here is a link
http://kyokushinnick.wordpress.com/2009/08/10/silencing-a-macbook-pro-hard-drive-for-2/