FWIW, the problem is still present on NetBSD 3.99.18 built from 2006-05-02
sources:

% uname -a
NetBSD fattie 3.99.18 NetBSD 3.99.18 (GENERIC) #0: Tue May  2 19:55:02 CEST
2006
hf@Gstoder.nt.e-technik.tu-darmstadt.de:/var/obj/netbsd-builds/current/mac68k/sy
s/arch/mac68k/compile/GENERIC mac68k
% ls -la
total 106760
drwxrwxrwt   4 root   wheel       512 May  4 00:20 .
drwxr-xr-x  22 root   wheel       512 May  3 23:47 ..
-rw-r--r--   1 hauke  wheel  54352553 Nov 27 23:21 base.tgz
drwxr-xr-x   2 hauke  wheel       512 May  4 00:03 bin
-r-xr-xr-x   1 hauke  wheel    253952 May  4 00:13 ls-1.5
drwxrwxrwt   2 root   wheel       512 May  3 23:59 vi.recover
% file ./ls-1.5
./ls-1.5: a.out NetBSD/m68k demand paged executable
% ./ls-1.5 -la
%

	hauke

--
"It's never straight up and down"     (DEVO)