puzzled

With 2895:

Welcome
Welcome to yaboot version 1.3.13 (Red Hat 1.3.13-2.fc6)
Enter "help" to get some basic usage information
boot: 
  2798                       2869                       2895                    
 
boot: 2895
Please wait, loading kernel...
   Elf32 kernel loaded...
Loading ramdisk...

Unexpected Firmware Error:
DEFAULT CATCH!, code=fff00300 at   %SRR0: 00c18ccc   %SRR1: 00003030 
 ok
0 > 


With 2869

   Elf32 kernel loaded...
Loading ramdisk...
ramdisk loaded at 01a00000, size: 2444 Kbytes
OF stdout device is: /pci@80000000/isa@b/serial@i3f8
command line: root=/dev/VolGroup00/LogVol00 ro console=ttyS0 norhgb noquiet 
memory layout at init:
  alloc_bottom : 01c63000
  alloc_top    : 20000000
  alloc_top_hi : 20000000
  rmo_top      : 20000000
  ram_top      : 20000000
Looking for displays
instantiating rtas at 0x1ffe5000 ... done
copying OF device tree ...