Yesterday I installed - and then uninstalled two different social sharing button plugins.
After deactivating and deleting, I can see that my site is still calling some external js and png files that must have been added by one or the other plugins.
I know that the references were not there previously because I was testing the site with Yslow before and after installing to check the impact on site's response with the plugins installed.
I am not a programmer, so I am stumped as to how to remove the calls to these unnecessary external references...
Also stumped as to how they could remain if the plugin(s) that created were removed.