  In the present paper derivations and *-automorphisms of algebras of unbounded
operators over the ring of measurable functions are investigated and it is
shown that all L^0-linear derivations and L^{0}-linear *-automorphisms are
inner. Moreover, it is proved that each L^0-linear automorphism of the algebra
of all linear operators on a bo-dense submodule of a Kaplansky-Hilbert module
over the ring of measurable functions is spatial.
