The rotational correlation time of the dipolar probe p,p’-cyano thiomethyl diphenylacetylene; varies linearly with the emission Stokes’ shift in l-propanol. This effect is not seen in nonpolar (pentane, hexadecane) or "fast" polar (methanol, acetonitrile) solvents. We ascribe these observations to dielectric friction in the different local environments experienced by the probe. These inhomogeneities persist on time scales much longer than the solvation time.