Extreme Ultraviolet Explorer satellite observations of Jupiter's Io plasma torus conducted over a two-year time period before, during and after the impacts of comet Shoemaker-Levy/9 reveal that no new spectral features appeared in the 400--715 ¿ spectral region. Io torus emission line luminosities remained stable to within ¿20% and showed no strong coherent increasing or decreasing trend during the weeks preceding or following the impact events. This work supersedes our previous claims of possible luminosity changes to the torus derived from the same data (McGrath et al., Science, 267, 1313, 1995). ¿ American Geophysical Union 1995