Subversion is not available now?

[LI, NING]

Dear Sirs,

Now why it says "E: Unable to locate package subversion" and "E: Unable to locate package libapache2-svn" by issuing command "$ apt-get install subversion" and "$ apt-get install libapache2-svn", respectively?

These commands are listed on your web page "http://subversion.apache.org/packages.html#ubuntu", and I  successfully download and install them a few days ago.

Subversion is a dependency of other free softwares, GMT and GMTSAR. I need it to work for something.

Thank you for the help!

Ning.
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LI, Ning. Ph.D.
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