I was just looking inside my new 200L yesterday, and I saw this liquid stuff on the sides of the barrel in various places. There are some that are close to front element and some more deep down closer to the rear element.
I always carefully inspect the lenses I buy with a flashlight when I first open the box and I am certain that I did not see this stuff before.
Also, some of it is a lot more than others, see the pictures below (it was not easy to take them, so I apologize for the quality). Click on the pictures to see the full size images
IMAGE LINK: http://imageshack.us/f/850/6j04.jpg/
IMAGE LINK: http://imageshack.us/f/17/mdgi.jpg/
IMAGE LINK: http://imageshack.us/f/27/yot0.jpg/
IMAGE LINK: http://imageshack.us/f/825/gyng.jpg/
IMAGE LINK: http://imageshack.us/f/850/1ec6.jpg/