That reminds me of this, which was even more insidious and probably caused more than a few unnecessary hardware replacements:<p><a href="http:&#x2F;&#x2F;www.techsupportforum.com&#x2F;forums&#x2F;f10&#x2F;strange-mysterious-two-random-scratch-sounds-intermittent-342048.html" rel="nofollow">http:&#x2F;&#x2F;www.techsupportforum.com&#x2F;forums&#x2F;f10&#x2F;strange-mysteriou...</a><p><a href="http:&#x2F;&#x2F;forums.studentdoctor.net&#x2F;threads&#x2F;windows-xp-computer-makes-random-annoying-woosh-woosh-sound.619402&#x2F;" rel="nofollow">http:&#x2F;&#x2F;forums.studentdoctor.net&#x2F;threads&#x2F;windows-xp-computer-...</a><p><a href="http:&#x2F;&#x2F;forums.whirlpool.net.au&#x2F;archive&#x2F;624611" rel="nofollow">http:&#x2F;&#x2F;forums.whirlpool.net.au&#x2F;archive&#x2F;624611</a>