After my cdrom arrived; I upgraded to 4.8 -release soon after packages 
became available online.  I don't use qemu often; but when I tried to 
run it after upgrade; I get core dump.  I don't use kqemu.
I invoke qemu using same options (saved in file) as worked in 4.7:

$ pkg_info | grep qemu
qemu-0.12.4p0       multi system emulator
$ export ETHER=em0 ; sudo -E qemu -m 440 -net nic,vlan=0 -net tap,vlan=0 
-localtime -monitor stdio /home/fbax/qemu/Win98C.cow -hdb 
/home/fbax/qemu/Win98D.cow
  {tun0 (bridge0 <-> em0)}
Abort trap (core dumped)

Did something change that I might be unaware of?
What is the next step in resolving this problem?

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I just read /usr/local/share/doc/qemu/README.OpenBSD
I'm using amd64, but not -net user; I revised my cmd anyway and it still 
crashes...

$ sudo env ETHER=em0 qemu -net nic,model=rtl8139 -net tap -m 440 
-localtime /home/fbax/qemu/Win98C.cow -hdb /home/fbax/qemu/Win98D.cow
  {tun0 (bridge0 <-> em0)}
Abort trap (core dumped)

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Use qemu-0.9 instead. Unfortunately there is no amd64 package for it
with 4.8 (there's a conflict between gcc 3.4 and 4.2 packages which
needs handling manually), but you can build it from ports
(/usr/ports/emulators/qemu-old).

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Thanks!  Things got a little tight with /usr only 4G; but after removing 
some stuff that did not belong there; qemu now working!
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/sd0e      3.9G    3.6G    106M    97%    /usr

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