I bought the lens in May. After a few weeks of use, VR started to act up - the picture in the viewfinder started to jump for up to 10 seconds and the lens would make a rattling noise. I sent it to Nikon and received it back in early August, after they replaced the VR unit. Today the lens started acting up again - VR is either not reacting at all or the picture jumps - only once and no noise, but I'm afraid the VR unit is defective again. Needless to say that I didn't drop the lens or anything. I like the lens for its IQ, but I'm really getting upset about the VR problems. Does anybody else have similar issues with their 16-85?