Let Ω be a compact
Hausdorff space. In this paper we give some necessary conditions and some sufficient
conditions on a Banach space Y in order that all continuous linear operators from
C(Ω) into Y are compact. We prove that for a nonscattered compact Hausdorff
space Ω, for Y belonging to a large class of Banach spaces all operators from
C(Ω) into Y are compact if and only if all operators from l2 into Y are
compact.