Another One Bites the Dust. E!Online reports in "Beyonce Tunes Out Lawsuit." From the article:

Armour, a Minneapolis singer-songwriter, filed the suit in Houston last July, claiming the 25-year-old superstar stole the chart-topping single's lyrics and hooks from "Got a Little Bit of Love For You," a song Armour had written and shopped around in the months preceding the hit's release.
The suit claimed the B'Day girl got a hold of the Armour song after her former manager sent out a demo to several music biz heavyweights. Among the studio recipients were Columbia Records and Atlantic Recording Corporations, the label homes of Knowles and reggae star Sean Paul, who is featured on the track.
However, on Monday, a federal judge dismissed the lawsuit after comparing the two songs and finding that they were "substantially dissimilar."