Mine is working fine, CPUZ #205038, Idling aroud 31-32C using the Opteron stock AMD heatpipe cooler. These new X2 5600+ chips are sweet.

Running 250Mhz x14, with the ram at 250Mhz (DDR500 er DDR2-1000) 5,5,5,15 using 1.525Vcore. THough the chip does run 3.0Ghz @ 1.30Vcore