Code for a CloudFlare script is being inserted into the source for one of my sites (Drupal) and I do not know where it is coming from. Someone suggested that it may be related to a Superfish module but I have searched and can't find it. It appears to be the cause of some problems because it links to an old version of d3.js.
At some time a Drupal module or theme must have installed the link to cloudflare in the the variable table in the Drupal mysql database (sometimes when a module is uninstalled it does not clean up 100%) I deleted the entry and the script isn't being inserted anymore.