Thank you, Seand, I caught the ‘buffer’ posts after I had submitted my query. :-[
Yes, indeed, it appears to be exactly the same problem. Now if we can only find out ‘why’ it is happening, and better yet, find a long-term solution.
I will stay alert to posts and see if someone can find the remedy without having to go to drastic measures of deleting or disabling avast. Avast has been such a good antivirus program - I would hate to lose it. :-[

Again, thanks!

LeLe