I use the Altec Lansings FX6021 as my main speakers and i usually have them do most of the amplifying, so my iMacs volume is never really over half way. So my Altec Lansings are near full volume. Since i got Tiger the following has happened twice, a really really loud noise/bang has blurred out of the speakers instead of a system sound. The first time was when i dragged a folder out of the left side of the main finder window, and instead of the nice puff sound i got the loudest bang i have ever hear. Second was when i just emptied my bin. They last as long as the system sounds so i assume it is somehow bypassing my iMac system volume, this doesn't happen everytime but just twice. But i tell you i have bad ringing in my ears because of it, my speakers seem ok tho. I don't know if there is a problem with my iMac or what, but now i am terrified of turning the volume at all for this problem to happen again when doing any system sound, i swear my hearing is no where near what it was after this second bang as well. I never ever got this with Panther, so i am assuming it is Tiger, has anyone else had this?!