Unread articles/count problems return?

I read all the articles in a feed page. On returning to the category page from whence I came, I noticed it showed 2 unread articles remaining in the feed count. I went back to the article page to check, and refreshed to see if there were indeed new articles. Instead of new articles, all the articles I had just read were back showing as unread on the feed page and the article count. I'm not sure if any of the articles were actually new, but if so it was at most one as I recognized the second article on the list.

I then clicked the article count to mark all as read. The screen shot below shows the current feed page views with the obvious problem with unread count off and read articles being shown.

1.2.115 (build 2227)
feed/http://feeds.feedburner.com/instapundit/main

Have a Merry Christmas (or other holiday of your choice) with this return visit from the Ghost of Bugs Past.