> ---------- > An error occurred during a connection > to www.google.com. > > security library: invalid algorithm. > > (Error code: sec_error_invalid_algorithm) Probably http://wiki.centos.org/Manuals/ReleaseNotes/CentOS6.5#head-eb6bb9abad0158d054915e0090560f6d1ff8f1ed (first issue on the list). Maybe this will help, or the Fedora bug listed in above link: http://dilfridge.blogspot.ie/2013/11/deactivating-rc4-cipher-in-firefox.html Do it for both rc4 and md5.