Hey guys, I've got a problem, so I figured I would ask the more knowledgeable folks I know. I'm a trying to burn a boot disk for Ubuntu 11.4 off of my MacBook Pro running OS X Lion. I downloaded the the .iso file and opened the disk utility. When trying to burn the DVD, I'm getting the error message "Unable to burn 'ubuntu-11.04-desktop-i386.iso.' (not recognized)" Any advice?