I have an old (12 years) "AF Nikkor 35-70mm" lens that came with my Nikon
F801s. I guess it's the standard lens they fitted on that camera when they
were sold.

Now it is almost impossible to turn the zoom ring on the lens. It's all
seized up. Is this a common sort of problem with old lenses? Is it generally
fixable (a "lube" job?) - and how can it be fixed (do it yourself, or a
camera shop)?

Thanks ,
Peter