Problems with lingq creation under firefox

I have a strange problem under firefox. When I have an item opened, after I have created the first LingQ, I can’t create any one more. The lingQ widget simply stop reacting. If I keep it open, the highlighted word never change, if I close it, I’m unable to open it again.
I don’t have this problem under IEexplorer. My firefox is, and suffered one of those automatic actualizations today. The problem appeared after that.

I have the same problem.

This is a bug in Firefox and we are working to resolve it. It will likely be fixed by the middle or end of next week. In the meantime, please use Internet Explorer.

I apologize for the inconvenience!