Booting into Darwin after 10.4.2 update


My software update popped up tonight with the update to 10.4.2, so I went ahead and installed it. But on the restart, halfway through the loading screen the screen turns black and loads up Darwin. Just a black screen that says Darwin/BSD (console) and then line below is Login:

Anyone know how I can get my computer to boot up back in OS X? I ran Disk Utility from my install disk already and repaired the hard drive, nothing wrong was found. From my install disk, I also tried setting the startup volume to OS 10.4.2 and restarting, but it just keeps going back to Darwin every time.