10.4.10 Audio-out glitch

It seems that ever since I updated to 10.4.10, anytime I access a site with audio or open an audio file in a prog, my iMac sends a charge or something through the audio-out line and it makes a pulse sound, then after source of the audio is closed for about a minute, I hear it click one last time. It doesn't occur in the built-in speakers.

To specify, I believe it is the audio channel becoming active, then after it's time-out period, shutting down again, as I don't think the sound occurs once the first pulse occurs.

I've already repaired disk permissions and everything.

Has this happened to anyone else?

It's a common issue after upgrading to 10.4.10, from what I've read, and you can too here.

There is no known fix right now, bummer!