The only logical conclusion is that the
latest stable version of Chrome has eliminated what ever caused the original problem.
My report was with IE.
I'm not interested in keep testing this. No additional specific details were requested to find the source of the (noncritical for me) problem, and the workaround
Scott recommended is still working. I
may try deleting the added facebook exception some time in the future. Currently, I will live perfectly fine with the workaround, so the potential issue would / could be influencing some
other blog readers.
Julia, thank you for communicating this to us, and thanks to Avast Team too for trying.