The power management (as well as the other boot parameters) being disabled is a requirement for the software we're using.
Some extra info that may be useful is that if I disable the uhci-hcd(USB 1.0) module from loading, it boots up fine but lacking USB 1.0 support.
Also, quiet is not being used in the boot params.
When I boot into rescue mode off CD and look at the drive, there are no log entries pertaining to the previous "failed" boot. If you want, I can give you the log messages from a boot where I disabled uhci-hcd from loading.
Here is what I copied off the screen after it freezes:
Attached scsi disk adb at scsi1, channel 0, id 0, lun 0
Loading jbd.ko module
Loading ext3.ko module
Creating root device
Mounting root filesystem
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Switching to new root
SELinux: Disabled at runtime.
SELinux: Unregistering netfilter hooks
INIT: version 2.85 booting
Setting default font (latarcyrheb-sun16): [ OK ]
Welcome to Red Hat Enterprise Linux ES
Press 'I' to enter interactive startup.
Starting udev: [ OK ]
Initializing hardware... storage network audioDisabling IRQ #11
After that it just sits there for a few minutes before it starts spitting out "INIT: cannot execute "/sbin/mingetty"" errors.
Thank you for your reply.