I have WD Scorpio (40gb, ide) with clicking noise issue, too. Putting the drive inside 2.5" Scythe enclosure is no help. Still hearing the click from meters away. Have you tried the WD solution 1414 http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_faqid=1414 I would do it if I coul...