[pstricks] problem with pstricks-add

[McGarry Vince]

I have a problem with spurious tick-marks when including pstricks- 
add. Perhaps there's a newer version I don't have. See:

http://www.austincc.edu/vince/TeX-Example/pstaddno.pdf

for an example without pstricks-add and

http://www.austincc.edu/vince/TeX-Example/pstaddyes.pdf

for an example with it.

The file and file lists are below.

Vince

%%%%%%%%%%%%

\listfiles

\documentclass{minimal}

\usepackage{pstricks}
\usepackage{pst-plot}
\usepackage{pstricks-add}

\begin{document}

\def\f#1{#1 2 exp 4 sub}

\psset{unit=0.8}

\begin{pspicture}(-5,-7)(5,7)
\psaxes[arrowscale=2]{->}(0,0)(-4.7,-4.7)(4.7,5.7)
\psplot{-3}{3}{\f{x}}
\end{pspicture}

\end{document}

%%%%%%%%%%%

without pstricks-add

*File List*
minimal.cls    2001/05/25 Standard LaTeX minimal class
pstricks.sty    2005/12/19 v0.31 LaTeX wrapper for `PSTricks' (RN,HV)
pstricks.tex    2005/12/22 v1.14 `PSTricks' (tvz)
   xcolor.sty    2005/12/21 v2.09 LaTeX color extensions (UK)
    color.cfg    2005/02/03 v1.3 color configuration of teTeX/TeXLive
    dvips.def    1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)
pst-plot.sty    2004/07/15 package wrapper for pst-plot.tex
pst-plot.tex    2004/05/18 1.41 `pst-plot' (tvz)

pstricks-add included

  *File List*
minimal.cls    2001/05/25 Standard LaTeX minimal class
pstricks.sty    2005/12/19 v0.31 LaTeX wrapper for `PSTricks' (RN,HV)
pstricks.tex    2005/12/22 v1.14 `PSTricks' (tvz)
   xcolor.sty    2005/12/21 v2.09 LaTeX color extensions (UK)
    color.cfg    2005/02/03 v1.3 color configuration of teTeX/TeXLive
    dvips.def    1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)
pst-plot.sty    2004/07/15 package wrapper for pst-plot.tex
pst-plot.tex    2004/05/18 1.41 `pst-plot' (tvz)
pstricks-add.sty    2005/03/03 package wrapper for pstricks-add.tex (hv)
pstricks-add.tex    2006/03/12 v2.74f `PSTricks-add' (hv)
pst-xkey.tex    2005/11/25 v1.6 PSTricks specialization of xkeyval (HA)
xkeyval.sty    2005/11/25 v2.5e package option processing (HA)
xkeyval.tex    2005/11/25 v2.5e key=value parser (HA)
***********