It's maxiumu, of course. This has to have been done intentionally. As a joke. Right? From "Puppy killer blames drugs for attack on dog" on CBC News online on January 26, 2011. Oh! I just looked at the article now, and the error has been "corrected" to the maxiumum sentence. Click the image to enlarge it.
Merci, Mlle Richards
23 hours ago