At first it seemed like it worked in 10.6.8 as the interface came down and it asked me if I wanted it to start at log in. I said no and from that time on I couldn't launch it any longer. In addition I tried to remove it with App Cleaner and I thought I got rid of it but using Find Any File I found it hadn't gone completely. It installed a Unix file and another file in Unix that the trash couldn't handle. I used Trash It to get rid of it.. The nuisance of this app is awful I want to give it No Stars but I have to give it 1/2 star for misery.