Kernel Panic Upon Booting 7.0-RC2 CD and Stall

[locke]

Hi all,
	I was trying to boot the boot-only 7.0 RC2 disk for install today  
when i got a kernel panic whenever ACPI is enabled. I disabled  
basically all my hardware and I'm guessing the problem is with the  
EVGA nForce 680i LT motherboard, even though it boots fine on 6.3.  
When ACPI is enabled it will panic, but when it isn't it stalls right  
after mounting the disk ufs:/dev/md0. Here are the relevant lines of  
output:

This one is with ACPI disabled,

<code>sio1: configured ir1 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
sio1: irq maps: 0 0 0 0
sio1: probe failed test(s): 0 1 2 4 6 7 9
sio1 failed to probe at port 0x2f8-0x2ff irq 3 on isa0
sio2: not probed (disabled)
sio3: not probed (disabled)
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on  
isa0
isa_probe_children: probing PnP devices
Device configuration finished.
Reducing kern.maxvnodes 132278 -> 100000
procfs registered.
Timecounter "TSC" frequency 2399994801 Hz quality 800
Timecounters tick every 1.000 msec
lo0: bpf attached
hptrr: no controller detected
md0: Preloaded image </boot/mfsroot> 4194304 bytes at 0xffffffff80bcad80
ATA PseudoRAID loaded
Trying to mount root from ufs:/dev/md0
start_init: trying /sbin/init
start_init: trying /sbin/oinit
start_init: trying /sbin/init.bak
start_init: trying /rescue/init
start_init: trying /stand/sysinstall
</code>
After the last start_init line is where it stalls (i let it sit for  
over an hour, trust me, its stalled).

This is with ACPI enabled,
<code>
acpi0: <Nvidia NVDAACPI> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
acpi0: reservation of 0, a000 (3) fixed
acpi0: reservation of 100000, 7fdf0000 (3) failed
...
pci_link34	Index	IRQ	Rtd	Ref	IRQs
Initial Probe	0	255	N	0	20 21 22 23
Validation		0	255	N	0	20 21 22 23
After Disable	0	255 N	0	20 21 22 23
...
pci_link37
...
acpi_hpet0 <High Precision Event Timer> iomem  
0xfeff0000000000000-0xfeff0000000003ff on acpi0
panic: vm_fault: fault on nofault entry, addr: ffffffffac4b1000
cpuid=0
Uptime=1s
</code>

Thanks for your time!