Seemed to work ok at first, but could not get any stable boot off of any drive attached to the Sonnet card, ATA133, even after the firmware 4.5. Other weird issue, seemed to not like IBM DeskStar drives at all, giving me repeated failures on booting from these drives while attached to Sonnet, and giving repeated and excessive red warnings from DiskWarrior. Went back to booting from a different drive attached directly to the motherboard.
Still getting Diskwarrior red error corrections everytime I run it, after working for even a short time. Hmmmm.... These same drives worked fine on OS9.2.2, but do not seem to like the combination of OS 10.2.6 plus the sonnet ATA 133 card.