Thank you for your info. I have a PMAG-E and MIPS CPU R4400.
It is so strange that I found no difference between this snapshot
and the previous one. Look at this:

	# ls -l /tftpboot/
lrwxr-xr-x  1 root  wheel       22 Oct 11 08:20 netbsd.pmax -> netbsd.pmax-1.5_ALPHA2
-rw-r--r--  1 root  wheel  4422816 Oct  9 19:19 netbsd.pmax-1.5_ALPHA2

The file size is just like the one before the declaration made
by Tohru Nishimura(See 10-06, Tohru Nishimura "1.5_ALPHA2 was 
replaced").

Another thing may be worth noticing:

	# gunzip install.ecoff.gz

gunzip: install.ecoff.gz: decompression OK, trailing garbage ignored

Same message appeared on gunziping other gzipped files.