新装PGF/TikZ碰撞,为什么？

我有一台安装了tetex的干净的CentOS 5.5机器.接下来,我安装了PGF/TikZ:

wget http://media.texample.net/pgf/builds/pgfCVS2010-06-02_TDS.zip
unzip pgfCVS2010-06-02_TDS.zip
\cp -r tex /usr/share/texmf
texhash

这是我的文件:

\documentclass{article}
\usepackage{tikz}
\begin{document}
test
\end{document}

我正在尝试编译它,这就是我得到的:

$ latex test.tex
This is pdfeTeX, Version 3.141592-1.21a-2.2 (Web2C 7.5.4)
entering extended mode
(./test.tex
LaTeX2e <2003/12/01>
.. skipped ..
(/usr/share/texmf/tex/latex/pgf/frontendlayer/tikz.sty
(/usr/share/texmf/tex/latex/pgf/pgf.sty
(/usr/share/texmf/tex/latex/graphics/graphicx.sty
(/usr/share/texmf/tex/latex/graphics/graphics.sty
(/usr/share/texmf/tex/latex/graphics/trig.sty)
(/usr/share/texmf/tex/latex/graphics/graphics.cfg))))
(/usr/share/texmf/tex/latex/pgf/utilities/pgffor.sty
(/usr/share/texmf/tex/latex/pgf/utilities/pgfrcs.sty
(/usr/share/texmf/tex/generic/pgf/utilities/pgfutil-common.tex)
(/usr/share/texmf/tex/generic/pgf/utilities/pgfutil-latex.def)
(/usr/share/texmf/tex/generic/pgf/utilities/pgfrcs.code.tex))
(/usr/share/texmf/tex/latex/pgf/utilities/pgfkeys.sty
(/usr/share/texmf/tex/generic/pgf/utilities/pgfkeys.code.tex
(/usr/share/texmf/tex/generic/pgf/utilities/pgfkeysfiltered.code.tex)))
(/usr/share/texmf/tex/generic/pgf/utilities/pgffor.code.tex))
(/usr/share/texmf/tex/generic/pgf/frontendlayer/tikz/tikz.code.tex
(/usr/share/texmf/tex/generic/pgf/libraries/pgflibraryplothandlers.code.tex
! Undefined control sequence.
\pgfsetplottension ...ttension {\pgf@sys@tonumber 
                                                  \pgf@x }
l.104 \pgfsetplottension{0.5}

? 

我没有在网上找到关于这个问题的任何线索.在其他服务器上我没有这样的问题.有人可以帮忙吗？谢谢!

PS.顺便说一句,我尝试了另一种PGF/TikZ,较旧的,没有运气:(