AutoStart worm in the U.S.

Eric Santelices writes that, when working at one of his client's offices, "we noticed one of the computers acting strange on restarts and do all kind of strange things during use. We decided to run Virex with the AutoStart 9805c upgrade. We found that every drive on every Mac on their network was infected. We were able to track the 9805 worm to a disk received that day from California."