Have any mac users out there managed to dual-boot a new macbook pro (this year) running OSX 10.7 with a linux distro? Every tutorial I see is for older macbooks, and rEFIt, when I tried to use it, wouldn't really work - no boot menu showed up, and for some reason my macbook would stall every other (seriously - I did experiments) time I tried to boot up into anything. Has anyone managed to dual boot the two?

Hey, I managed with my macbook to get ubuntu and fedora working with this article.
Ubuntu on Macbook Pro

This is my set up and I am running OS X Lion. Every one thinks its a bad system. It is just new and needs some work arounds still but either way since mac use efi to boot rather than bios it can be rather tricky. Hope this helps! If you need help, please let me know.

Model Name: MacBook Pro
Model Identifier: MacBookPro8,2
Processor Name: Intel Core i7
Processor Speed: 2.2 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 4 GB
Boot ROM Version: MBP81.0047.B24