Re: Xorg, Nvidia -> black screen of death.
Not here. I'm already using gentoo-dev-2.6.7-r11, Xorg and the latest nvidia drivers. What it did improve for me was I can now enable acpi so the machine can completely power off on shutdown. Other than that, no diff. Only runs in pci mode. Black screen on either kernel agp OR nvidia agp.
What hardware are you on, and are you in 64bit mode if it's an opteron? I'm on a tyan k8w, single cpu opteron, running gentoo in 64bit mode.