Last night I found this thread and this morning I looked close at my FIT. Sure enough it's doing it too. Called the (800) 999-1009 for the U.S.A. and was told to simly take it to the dealership. No case number or mention of a return call. Here are a couple pics.
http://img165.imageshack.us/img165/9...derear1zd6.jpg
http://img220.imageshack.us/img220/9...derear2ys6.jpg
Took delivery of my FIT on 5-29-06. There are a couple other FITs in this small town, when I get a chance I'm going to stop by where one of the owners works and see if theirs is doing it too.
I have 4983 miles on it so I may just wait and get the oil change at the same time, plus they have to etch the windshield while it's there since they neglected to do so when they replaced it due to a stress crack.
Hope they let me use a s2k for a loaner.

But I doubt it.