Yesterday I noticed that throughout my blog, the trailing space has disappeared from behind every comma. No other problems noted. Today, I upgraded to 3.1.3 and no change.
The trailing spaces behind the commas are all there, when editing posts in the dashboard, but disappear when the page is published.
My theme is Altahualpa 3.6.7. My website is http://hainesnews.net.
Also, I REALLY hope this isn't related...last week I had some virus issues in my PC...