Downloaded and installed Lion. Trim was not enabled for my Samsung 470 SSD. I patched with Trim Enabler 1.2 and after the reboot, trim was enabled. I also used the patch on 10.6.8 and it seemed to work fine. The dev says it will work okay with this version of Lion, but he is developing a different patch that will work with later versions of Lion. Dev is: http://www.groths.org/ Donations if you want.