  We suggest a novel type of composite spatial optical soliton created by a
coherent vortex beam guiding a partially incoherent light beam in a
self-focusing nonlinear medium. We show that the incoherence of the guided mode
may enhance, rather than suppress, the vortex azimuthal instability, and also
demonstrate strong destabilization of dipole-mode solitons by partially
incoherent light.
