@ amazing and Chain
Out of your own curiosity why don't you just give 'clicknot' a try?
Click on Amiduffer's Aminet link above and download the top item called clicknot373.lha (its only 3K in file size)
Just put it into your Workbench:WBStartup drawer and you won't hear any clicking at all after your Amiga has fully booted :-)
A4000 Mad