yeah i am experiencing the same thing on a d620 nvidia and lion. looks like my permissions are screwed so far as i can tell. but got my snow running but i am booting with a usb drive with chameleon and an extra folder with a -f -v from snow i was not able to even get into the lion volume because of permissions. so had to set it manually using propedit app then running a permissions fix for 2 hours... it is currently still running. that lion partition was also where chameleon boot file resides since it is my first partition on the drive.