Description of problem:  System hangs on boot at "Initializing hardware ..."

Version-Release number of selected component (if applicable):  2.6.11-1.27_FC3 i686

How reproducible:  always

Steps to Reproduce: 
1.  boot with grub stanza containing "kernel /vmlinuz-2.6.11-1.27_FC3 ro
root=LABEL=/ vga=ext"
2.
3.
  
Actual results:  System prints out --
   Starting udev:
   Initializing hardware ... Disabling IRQ #10 


Expected results:  I expected system to boot and run, just like it did with the
2.6.9 kernels.


Additional info: 
Had no problem with earlier FC3 kernels (notably the 2.6.9-xxx series).
Not sure if my problems started w/ 2.6.10 or 2.6.11.

I can run if I specify "noapic apm=off acpi=off usb=off" in the boot options. 
(Found references to these options in other Bugzilla listings -- #138916 and
#151319.)  Fairly certain 'usb=off' doesn't affect the results.  Haven't had
time to play with the others to see which one really fixes the problem.


System is IBM Netfinity 4500R:
  * single 733MHz P-III processor
  * 512MB of memory
  * ServeRAID-3L card
  * 2nd ethernet card (LNE100TX -- uses 'tulip' driver)

# cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 8
model name      : Pentium III (Coppermine)
stepping        : 3
cpu MHz         : 731.418
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
pse36 mmx fxsr sse
bogomips        : 1441.79


# lspci
00:00.0 Host bridge: ServerWorks CNB20LE Host Bridge (rev 05)
00:00.1 Host bridge: ServerWorks CNB20LE Host Bridge (rev 05)
00:01.0 VGA compatible controller: S3 Inc. Savage 4 (rev 04)
00:02.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
(rev 44)
00:09.0 SCSI storage controller: IBM SCSI RAID Adapter [ServeRAID] (rev 0d)
00:0f.0 ISA bridge: ServerWorks OSB4 South Bridge (rev 4f)
00:0f.1 IDE interface: ServerWorks OSB4 IDE Controller
00:0f.2 USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 04)
01:03.0 SCSI storage controller: Adaptec AIC-7899P U160/m (rev 01)
01:03.1 SCSI storage controller: Adaptec AIC-7899P U160/m (rev 01)
01:05.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev 20)