Omega mesons in medium

Recent experimental observation indicates a downward mass shift of the ω meson when put into a nuclear medium. Therefore it is worthwhile to take a look at theoretical approaches that can describe this mass shift. One such hadronic model was introduced by Klingl et al. (Nucl. Phys. A650:299-312, 1999) The model will be shortly introduced in this talk and some of our results will be presented and compared with the previous results presented by Klingl et al. It turns out that the main approximation used by Klingl et al has no justification. A corrected calculation within this model yields unreasonable results. (orig.)