Several times today, the page has refreshed by itself while I was entering a post. One time it happened while I was editing a post (the edit box disappeared and the unedited page reappeared). Each time, I lost the text I entered.
GRIMBIMBLES MOOMSNOPS! (An exclamation from an old Pogo comic strip)
I am still experiencing, at random times, the inability to hold down the scroll arrow and scroll the page. There is always a very fast moving ad on the screen at the time.