Hi, So I have been trying to dual-boot Ubuntu Linux 8.04 on my MacBook, but it just hangs on a plain black screen after I tell it to either try it before installing or just install it! I tried Safe Graphics Mode, didn't help. What gives, and how do I fix it?? I hear it's a common problem with NVIDIA GPUs, which I have one (GeForce 9400M 256 MB). Thanks in advance.