 EiTB | Cruise's "M:I3" hangs on to No. 1 in down box office weekend San Jose Mercury News - LOS ANGELES - It was bottoms up for "Poseidon," as the cruise ship disaster remake failed to topple "Mission: Impossible III" from a second week atop the nation's box office, according to studio estimates Sunday. "Poseidon" sinks at North American box office Cruise's "M:I3" hangs on to No. 1 in down box office weekend |