In early 2003 I'd heard of the buzz from others on Be_Savage, and then Savagette's bike started it, too.
And since I was in the middle of tearing my engine apart (which had her paranoid), she insisted on taking her 1 year old bike to the dealer. We did.
When we went to pick it up, they said they couldn't find anything wrong. They said they had test driven it. I rode it around the block, heard the sound, and took it back. They rode it again, but said they couldn't do anything about it. Out of frustration, we took it home and Savagette agreed to let me mess with it.
That's how long the goop has been in there...and now she let's me do all the maintenance on hers