kernel not booting

Hey folks,

I have a kernel form today that does not boot:

>> NetBSD/macppc OpenFirmware Boot, Revision 1.12
12442780+169416 [463328+460121]=0xce8ec0
 start=0x100000
<---  [hangs here]


and a kernel from yesterday (with very slightly smaller BSS) that does
boot:

>> NetBSD/macppc OpenFirmware Boot, Revision 1.12
12442780+169416 [463296+460092]=0xce8e80
 start=0x100000
[   1.0000000] mem region 0 start=0 size=20000000
[   1.0000000] mem region 1 start=20000000 size=20000000
[   1.0000000] mem region 2 start=40000000 size=20000000
[   1.0000000] avail region 0 start=0x16000 size=0xdea000
[   1.0000000] avail region 1 start=0xe1b000 size=0x5ede5000
[   1.0000000] pool redzone disabled for 'kmem-04096'
...



I can see no source changes that would explain it - what am I missing?

Martin