Is it me or is it the cam/lens.

Hi, new d80 and 18-200 VR lens
I get an annoying shadow at 18mm with built in flash. Also get dark areas on top R and Left if I use the flash or not.
See examples.
one with flash one hand held.
There is no lens hood. I have a UV filter only.
(hmm. I'll try some shots without the filter too)
Hope its just me
edit: without the filter the problem is the same although the bottom shadow is about 30% smaller and 50% lighter
I get an annoying shadow at 18mm with built in flash. Also get dark areas on top R and Left if I use the flash or not.
See examples.
one with flash one hand held.
There is no lens hood. I have a UV filter only.
(hmm. I'll try some shots without the filter too)


Hope its just me

edit: without the filter the problem is the same although the bottom shadow is about 30% smaller and 50% lighter