I have recently noticed that the lense shutter takes ages to close. when i turn the camera on the lense zoom comes out without any problem but the shutter stayes closed for at least 10 seconds and then very slowly opens.

The "r10" message in the viewfinder is NOT an error code. The "r" stands for "remainder" and the "10" is the value. Together, it tells you how many more photos the camera's built in, high speed memory buffer can hold BEFORE the shutter will be stopped - so that the pictures in this memory can be transferred to the removable memory card. The process will take a few seconds or more - depending on the speed of the memory card you provided in the camera. If you pay attention to the the "r" number, while taking photos is rapid succession, after each picture - the number will decrease by one. When it reaches 0, you can no longer take additional pictures. During this time - the camera is moving the pictures to the memory card. When done, the "r" number will be high again, and the shutter will operate again.

The auto focus motor will make some noise it is turning to advance or retract the focus mechanism, and is normal. The camera requires sufficient contrast to obtain focus. Most of the time, a well lit subject will provide this. If you are zoomed in on a rather featureless subject - such as a clear or overcast sky, solid color flat wall, etc., where there is a lack of contrasting objects in the viewfinder, the camera can not detect an "edge" on any object; so it attempts to focus over the entire range of the lens to find it. If it can't, it prevents the shutter from releasing.

There is also a minimum distance that the lens will focus, too. If you are trying to zoom in on a close object, the lens may not be able to do it. In this case: either back away, zoom out - or both. If you need to get close to objects, you should consider buying "Macro" lenses. Nikon brand lenses that do this type of photography, oddly are called "Micro" lenses instead.

I hope this helps. Good luck!

Theirs oil on the shutter blades causing it to stay closed, Thats why you can't see though the lens or the viewfinder also, This comes from the grease from the zoom assy, It's a major job to fix it, Has to be fixed by a repair shop

Lines across your pictures or pictures too bright are due to the shutter not closing correctly or at all.
to check this- turn camera on, turn off flash, turn camera around and look into the lens. Adjust the zoom so that the shutter and internal lens comes up to the end of the lens and whatch as you take a picture. You should see the shutter close completely over the lens. If it doesn't move or does not close over completely then there is your problem.
If camera was dropped it could have jammed the shutter open or obstructed it in some way from closing completely.
camera will require repair/ service.
You may have some luck if you power up and down your camera numerous times before taking a picture. The action of the lens opening and closing may free the shutter.

Over exposure due to the shutter not closing over the lens. try taking video and see if that comes out ok. Another way to test the theory is to put your camera into full optical zoom and turn the flash off so as not to blind yourself and turn the camera to face you and angle the lens so that you can see into it without reflection. now take a picture and watch the shutter closely. In full optical zoom it should bring your internal lens right up to the front end of the lens so that you can see it clearly( this would depend on your camera though). Does the shutter cover the lens completely? it should do. If it doesn't then something is sticking it or obstructing it.
The video is a good indication of a faulty shutter as this does not use it so should work ok.
Only way to solve it completely is to strip it down and clean it.

This lens is too old for the D90, it has not got the electronics for metering and autofocus.
You can use it manually in M mode but you will have to set the aperture and shutter yourself.
The D90 manual has a section on compatible lenses, page 228 in my version.
This recommends CPU lenses for the D90, type G and D.

turn on when lense comes out take by end of lense and gently twist and pull you may here a click but do not force it. then turn on and off again this should solve the problem .

If I read this right, your lens is a 28 to 200mm zoom lens with aperture of f:3.5 - f:5.6. What this means is that at 28mm it has a maximum aperture of f:3.5. When you zoom out to 200mm, the maximum aperture is now f:5.6. This is perfectly normal for a zoom lens of this type.

Typical situation in Shutter preferred mode. I have the shutter set at 1/125 of a second and the f:stop is f:3.5. When I zoom out to 200mm, the shutter speed is still 1/125 of a second, but the f:stop is now f:5.6 and I have decreased exposure (darkened the picture) by almost 2 full f: stops.

Realizing this, I think that "turning off the camera" really isn't a fix. The problem is realizing that the aperture will change as the focal length of the lens changes (as you ZOOM in or out on your subject). Try the aperture preferred mode and you should note that the shutter speed will change as you zoom in and out.

Most important, pay attention to shutter and f:stop info in your viewfinder. FYI : Zoom lenses that hold aperture at all ranges cost several thousand dollars, and canon makes them - they weigh a ton.

sounds like the lil motor that is in charge of opening and closeing the shutter might have shorted out causing it to stick, or it could have just simply burnt out or striped the lil gears on the motor. If the shutter moves alil bit i would say you probably have a short in the shutter motor.

Hi, I have the same problem with my sony DSC-S700. I think someone drop it, and it took pictures with horizontal line specially outdoor. I noticed that the lens shutter does'nt open and close. All I did was to tap on the lens several times and everythings back to normal. I so happy my camera is working again. Thanks to your idea. Brenton

If you've replaced the batteries with fresh ones, it probably has a broken zoom assembly. It'll have to be replaced by a repair shop.