>>The problem seems to have magically gone away!?
>
>Ok, this is good. However, we were not able to associate what triggered the browser to start responding ok. Maybe there was a Microsoft update that triggered something. IAC, let me know if you have such a situation again.

I don't *think* there was an MS update in that week, but could be wrong. Anyhow, it's working again and I am happy :)