XScreensaver won't load on startup?

[Andrew Conkling]

I'm using the default xinitrc on my system, but xscreensaver won't load:

# Launch xscreensaver (if available), but only as non-root user
test $UID -gt 0 -a -z "$VNCSESSION" && xscreensaver -no-splash &

echo $UID produces "1000".  $VNCSESSION is empty.

Any ideas why this isn't working?

Thanks,
Andrew