1,ubuntu12.04 svn ssl错误提示： OPTIONS of '<url>': SSL handshake failed: SSL error: Key usage violation in certificate has been detected. (<url>)
12.04前： sudo mv /usr/lib/libneon-gnutls.so.27 /usr/lib/libneon-gnutls.so.27.old sudo ln -s /usr/lib/libneon.so.27 /usr/lib/libneon-gnutls.so.27 12.04： 1.Uninstall the current libneon package: sudo apt-get remove libneon27> 2.Download the latest libneon package fromhttp://packages.debian.org/squeeze/libneon27 (at the bottom you can choose the right version for your architecture). 1.32位下载：
http://ftp.cn.debian.org/debian/pool/main/n/neon27/libneon27_0.29.3-3_i386.deb 2.64位下载：http://ftp.cn.debian.org/debian/pool/main/n/neon27/libneon27_0.29.3-3_amd64.deb
3.Install the required libssl dependency: sudo apt-get install libssl0.9.8 4.Install the downloaded libneon package. E.g. for the 64Bit architecture: dpkg -i libneon27_0.29.3-3_amd64.deb 或 libneon27_0.29.3-3_i386.deb 5.Change the symbolic links again like described above: sudo mv /usr/lib/libneon-gnutls.so.27 /usr/lib/libneon-gnutls.so.27.old sudo ln -s /usr/lib/libneon.so.27 /usr/lib/libneon-gnutls.so.27