For Q3 2012:
"The drop can be attributed to disappointing sales of server processors, and the relatively low demand for this year's "Trinity" APUs. Even the K1-based Phenom II and Athlon II processors have sold better. The analysts state that AMD now holds between 16.1 and 17 percent of the x86 market."
Got that? Low demand for the new Opterons. Low demand for the new APU, Trinity. Phenom II sold better than either! Ouch. That's gotta hurt.