Problems of the GFC in Firefox is a conflict with prototype.js
The plugin for GFC (Google Friend Connect) WordPress stopped working in recent versions of Firefox, now finally found the solution. Apparently it's a conflict with the prototype.js and can be solved by placing the code below before the gadget:
<script>
window.JSON = {
parse: function (st) {
st.evalJSON return ();
}
stringify: function (obj) {
Object.toJSON return (obj);
}
;}
</ Script>

