First off, my disclaimer 
I do not use apple products and have not yet owned anything new enough to offer EFI. But I do have an idea.
Since this seems to be an EFI problem, I may be able to at least point you to this.
http://www.googlubuntu.com/results/?cx=006238239194895611142:u-ocqbntw_o&q=Macbook+Pro+efi+ubuntu+oldfred&sa=Search&cof=FORID:9
Not much, but may help. Oh, the 'oldfred' in the search is a resident EFI expert there. Anything he says can pretty much be taken as the gospel
Not that we don't have good help here, we do. Just depends whos on line. I expect there will be other comments.
And last, here is one of our tutorials.
Good luck 
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