Erros in: make -j 16 buildword

Hi,

One way or another it seems that I can no longer buildworld with -j16.
-j8 works perfectly, but -j16 fails consistently at:

===> gnu/usr.bin/texinfo/doc
ln -fs /home2/src/gnu/usr.bin/texinfo/doc/../../../../contrib/texinfo/doc/texinf
o.txi texinfo.texi
makeinfo --no-split -I /home2/src/gnu/usr.bin/texinfo/doc -I /home2/src/gnu/usr.
bin/texinfo/doc/../../../../contrib/texinfo/doc texinfo.texi  -o texinfo.info
makeinfo --no-split -I /home2/src/gnu/usr.bin/texinfo/doc -I /home2/src/gnu/usr.
bin/texinfo/doc/../../../../contrib/texinfo/doc /home2/src/gnu/usr.bin/texinfo/d
oc/../../../../contrib/texinfo/doc/info.texi  -o info.info
makeinfo --no-split -I /home2/src/gnu/usr.bin/texinfo/doc -I /home2/src/gnu/usr.
bin/texinfo/doc/../../../../contrib/texinfo/doc /home2/src/gnu/usr.bin/texinfo/d
oc/../../../../contrib/texinfo/doc/info-stnd.texi  -o info-stnd.info
gzip -cn info.info > info.info.gz
gzip -cn info-stnd.info > info-stnd.info.gz
gzip -cn texinfo.info > texinfo.info.gz
1 error
*** Error code 2
1 error
*** Error code 2
1 error

I have not tried any values in between, but there was I time I could build at
-j32 and get loads of around 25 in some parts.

Given the sparseness of info here, I'm at a loss where to go and look. Since it
could stem from any of up to 16 make threads some more error infor is needed.

Unless anybody has suggestions of which programs generate these tearse
messages???
Or a way to get make to be more informative???

--WjW