The auto refresh every 8-9 seconds that Kaisa mentioned is occurring with me, at least I believe it is the same thing. I had this last week and it ended when the other issue was resolved. But it returned Saturday and has continued.
What it is: every 8-9 seconds you hear "click-click" and the bar across the bottom refreshes as if the page is loading, only for a split second. If you click the back button, it won't go anywhere, and if you click the drop-down arrow for the back button you see a list of pages (one for each refresh) "http 404 not found".
My reason for posting this here is to ask if anyone else is getting this now?