transcode not finishing cleanly

i've been able to make playable AVI files (xvid/mp3) using two-pass method, but on each pass transcode seems to reach 99% or 101% and then CPU activity stops.  by reusing the data from the first pass, i can restart dvd::rip and resume the second pass, but transcode seems to get stuck doing cleanup.

ubuntu 7.04
dvdrip 0.98.4
transcode v1.0.2

Executing command: mkdir -m 0775 -p '/dvdrip-data/proj/tmp' && cd /dvdrip-data/proj/tmp && mkdir -p /dvdrip-data/proj/avi/010 && execflow -n 19 transcode -H 10 -a 0 -x vob -i \/dvdrip\-data\/proj\/vob\/010\/ -w 5640,50 -b 128,0,2 -s 3.111 --a52_drc_off -J smartyuv=threshold=10:Blend=1:diffmode=2:highq=1 -f 30,4 -M 2 -Y 4,4,4,4 -B 1,11,8 -R 2 -y xvid --psu_mode --nav_seek /dvdrip-data/proj/tmp/proj-010-nav.log --no_split  -o /dvdrip-data/proj/avi/010/proj-010.avi --print_status 25 && echo EXECFLOW_OK

thanks in advance for any suggestions
DM