Hi! i have the same bug!
Chameleon don't see ext3 partitions. I have already 2 hhd in double boot Mac Os X retail on the fisrt and windows on the next hdd and my linux on the third hdd. Chameleon work great for the 2 first but not with linux.
mobo D975XBX intel , Q6600 , 8800GTS 640mb , ultra x3 1000w , 5 hdd 500gb, Mac os x retail leopard , windows xp pro , ubuntu 8.10