Browser seems to 'hang' waiting for spoken text

[hroes]

Yesterday and today it happened that in an exercise where you need to type a spoken text that the browser (latest version Chrome on a win7 notebook) seems to hang, nothing is ever said, no matter what you click. The only way around that is to reload, unfortunately, a reload brings you back to the beginning of the lesson and all the points you earned until then go up in smoke.

[ruthenium99]

this keeps happening to me