Other mistake: During the scene where Thrax is talking to the other germs and viruses in the Zit and is pointing out things on the map of Frank, the word 'collarbone' is spelled wrong ('Collerbone'). (00:52:49)
Other mistake: In the beginning of the film when John and Nadia are eating supper together, Nadia gives John a ring and speaks in Russian. The camera is at her back so we can't see her mouth move, but it is definately not Nicole Kidman's voice.
Other mistake: When Spike is strolling through the city, at some point he walks by one of those posts pointing to various directions. One of the signs is written in cyrillic characters and, below, we can read the "English" translation: Ruccian Town.
Other mistake: Mercusio tazes Jezzie and enters her apartment. Look at the wall clock; the time shown is 4:05, when Cross was barely at the Watergate Hotel at that time. (01:13:00)