Hi,

It's with NetBSD-1.5.1-GENERIC.  To configure my own kernel (with page
up fix) I use adjustkernel perl script referenced into "NetBSD guide"
http://www.mclink.it/personal/MG2508/nbsdeng/chap-kernel.html#AEN1481

To be sure it don't throw away CD-ROM support, I try to mount it but
whole system is then frozen:

    # mount /dev/cd0a /mnt
    wdc0:0:1: lost interrupt
	    type: atapi tc_bcount: 32 tc_skip: 0

As soon as this append, it is 100% reproductible.  Even after a
shut-down in OF, switching into GNU/Linux and mounting/unmounting it,
eject it from OF...

Note that I install this NetBSD from a CD-ROM...
-- 
Edouard G. Parmelan
http://egp.free.fr