The dealer has replaced lens & body.
I think the new lens is a bit better but certainly vignetting is present to various degrees as shown on the link referred to by Jonathan.
The vignetting would only be noticeable in certain pics with plain background.
I have tried Nikon Capture NX to reduce vignetting, it works but I feel the contols in PS Elements is better (trial version). I have to decide which software to buy.
Capture NX handles raw files well but all other features are better in Elements. I have not been able to open raw files in Elements even though it is suppoused to accept them from the D80.
