Grub unable to load blocklist for kernel on optiplex 320

[Ben Prew]

I've got a Dell Optiplex 320, with the ATI sb600 chipset and SATA controller in 
it, and I'm having some problems getting the system to boot after install.

I was able to get the install cd to recognize the drives with the parameter:

[CODE]
pci=nomsi[/CODE]

And I'm able to complete the install, and parition the drive, and everything 
else looks ok.

BUT, when I go to boot the system, the grub boot menu comes up, and after I 
choose my install, it hangs shortly after that, just before it starts 
uncompressing the kernel, I believe.

The screen looks like this:

[CODE]Booting command-list

root (hd0,1)
 Filesystem type is ext2fs, partition type 0x83
kernel /vmlinuz=2.6.18-1.2798.fc6 ro root=/dev/VolGroup00/LogVol00 pci=nomsi 
rhgb quiet
  [Linux-bzImage, setup=0x1e00, size=0x1b94fc]

[/CODE]

... and that's it!  Also, I have gone into the command-line, and the command 
blocklist <kernel-file>, it reads a few lines and then appears to hang/crash.  
I'm not sure if this is a bug in the Dell BIOS, or something else.

Finally, I am able to get lilo to boot correctly, and I've tried grub (the fc6 
version) on several other optiplex 320s, and they exhibit the same behavior.

Thanks

--Ben