Error on SVN checkout: SSL handshake failed: SSL error: Key usage violation in certificate has been detected.

install libneon
$ sudo apt-get install libneon27

And then to remove the previous symbolic link by replacing it with a new one pointing to gnutls:

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