I have a D90 recently acquired. I don't believe this issue was occurring when I first started using it.
I have noticed that when I am in AF-S mode and I focus on a subject, recompose, then shoot, the camera refocuses after each shot even when I'm still holding the shutter button halfway. The manual says that this should not be the case.
I realize that I can set and hold the AE-L/AF-L button, but that is a pain and I feel it should not be necessary.
Has anyone ever encountered this problem? Any advice on how to proceed?