I have a brand new iMac OS 10.8.3 (Mountain Lion). It's the $1799 one as of this writing (5/30/13). I want to be able to dual boot to ubuntu using rEFIt. The installation of rEFIt worked just fine and I have reduced the mac partition to accommodate an install of ubuntu. I have burned the cd (First trying the 64 bit then the 32 bit). Upon boot onto the cd, I get the language selection and when I select install ubuntu text fills the screen as it is detecting hardware. It gets to a line about the Bluetooth USB host adapter and then it hangs forever. I am going to try a boot from flash drive to see if that will help, but otherwise I am at a loss. Does anyone have any suggestions for me?