Revert "Avoid SSL-problem with ruby 1.9.3p0". Fixed on thinpower by adding /etc/ssl/cert.pem
Actions on thinpower were:
sudo curl -O http://curl.haxx.se/ca/cacert.pem
mv cacert.pem /etc/ssl/cert.pem

This reverts commit 4330dabd0e62d9880623e229e77c1f926b54ab8a.