I also have the Dell e6520 and have had no luck getting past the initial install of Lion. All the POST inastal stuff get s me nowhere past many different Kernal Panics. Which sucks because I'm lookin at the desktop of LION right now on my e6520 but in -x -v safe mode. If you have any help you can offer I would very much appreciate it. Write me a PM if you can. I will subscribe so I get an immediate response. I have tried many instal methods. My latest was using myhack 3.1....also tried Iatkos