Ok, I got mine to panic while not in X11.  Sources were from the 6th.
Panic was from gqmpeg playing an ogg just as one song finished and the
next was about to start.  Backtrace shows the panic was in gqmpeg
closef().

NetBSD capsicum.wsrcc.com 3.99.9 NetBSD 3.99.9 (WSRCC_MPACPI) #31: Thu Oct  6 23:18:29 PDT 2005  wolfgang@capsicum.wsrcc.com:/var/obj/netbsd/sys/arch/i386/compile/WSRCC_MPACPI i386

uvm_unmap_remove()
uvm_unmap1()
pipe_free_kmem()
pipeclose()
pipe_close()
closef()
syscall_plane()
--- syscall (number 6) ---

Sorry, no serial console.  I have a jpeg though.  Folks might need to
cut and paste the url to get around some lame anti-leaching security.

 http://www.wsrcc.com/wolfgang/private/netbsd-audio-panic/pic20051011_082410.jpg

-wolfgang