Howdy,

Another bit of info:

I tried this on a B&W.  I booted from the CD, and I don't have the problem.

The machine with the problem is a G4/AGP with a Sonnet CP upgrade
(1 Ghz 7455 CPU)  to wit:

Jul  7 19:35:17 grace /netbsd: NetBSD 1.6.2 (try6) #3: Wed Jul  7 19:33:18 CDT 2004
Jul  7 19:35:17 grace /netbsd:     donlee@grace:/usr/src.162.mod/sys/arch/macppc/compile/try6
Jul  7 19:35:17 grace /netbsd: total memory = 896 MB
Jul  7 19:35:17 grace /netbsd: avail memory = 813 MB
Jul  7 19:35:17 grace /netbsd: using 2048 buffers containing 45976 KB of memory
Jul  7 19:35:17 grace /netbsd: mainbus0 (root)
Jul  7 19:35:17 grace /netbsd: cpu0 at mainbus0: 7455 (Revision 2.1), ID 0 (primary)
Jul  7 19:35:17 grace /netbsd: cpu0: HID0 8450c0bc<EMCP,TBEN,NAP,DPM,ICE,DCE,SGE,BTIC,LRSTK,FOLD,BHT>
Jul  7 19:35:17 grace /netbsd: cpu0: 1000.00 MHz
Jul  7 19:35:17 grace /netbsd: cpu0: 256KB L2 cache, 2MB L3 backside cache
Jul  7 19:35:17 grace /netbsd: uninorth0 at mainbus0

Could it be the L3 cache that's doing something bad?  Do I need something
in my kernel OPTIONS to properly do this?

Thanks,

-dgl-

P.S. the problem also occurs with the kernel on the CD, so it's not
*just* _my_ kernel. ;->