As reported by CNN.com:

Weezer’s entry ended the three-week second-place stint of Mariah Carey’s “The Emancipation of Mimi” (Island/Def Jam), which dipped to No. 3 with almost 173,000 copies.

This still doesn’t justify the lackluster dmb album selling twice as many copies as weezer’s album, but at least there is some justice in the world.