Hard drives recognized at only DMA

[Rafi Lurman]

I have two hard drives on the same cable, 1 master and 1 slave. They are both ATA133 IDE drives, but when I'm booting up FBSD 5.1 it says "ad0: DMA Limited to UDMA 33, non ATA66 cable or device". And it says the same for ad1. I am fairly sure that I'm using an 80-wire UDMA-133 IDE cable. So what could be causing FBSD to set the drives to only UDMA 33? Thanks.