The following information has now been posted to the AJA support page for the KONA 3:
Important Note: AJA recommends when using the KONA 3 with the KONA 9.0.1 driver under Mac OS X 10.6.8, that you boot your Mac in 64 bit mode. Please refer to the Apple support documentation for advice on how to do this properly:
http://support.apple.com/kb/HT3770
http://support.apple.com/kb/HT3773
We apologize for the inconvenience that the 10.6.8 update has been for some KONA 3 users. An updated driver will also be forthcoming.
--
AJA Video Systems
+1 (530) 274-2048 Intl.
(800) 251-4224 US
sales@aja.com