When is sataIII actually sataIII?

[spamless at mail-on.us]

Hi all,
I picked out, and put together some hardware for a new FreeBSD
powered box. I chose a WD blue drive I knew was pretty zippy.
But I was quite disappointed to discover that FreeBSD wouldn't
support it @6Gb.
The following output from dmesg(8):
GEOM: new disk ada0
ada0: <WDC WD10EZEX-75WN4A0 01.01A01> ACS-3 ATA SATA 3.x device
ada0: Serial Number WD-WCC6Y3CJCTDC
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 953869MB (1953525168 512 byte sectors)

My hardware supports it; both drive, and controller. Yet for
some reason FreeBSD will only *acknowledge* the capabilities.
Do I need to impose some quirk, or something.

Thanks!

-- 
Chris out...