Motorola (MOT) was unchanged in preopen Instinet trading. After the close Wednesday, the mobile-phone company posted fourth-quarter earnings of 15 cents a share, excluding items, in line with the Street's twice-lowered estimate. The year-ago result was 25 cents. Motorola posted a 20% drop in order-growth in its communications business, which includes handsets, and a 19% decrease in growth in its chip business.

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