WordPress used to correctly display post dates even if they were in the 1970's or 1960's. Since 2.8, posts with a date in the 1960's are given today's date.
So for example in the Archives list in the sidebar, I have 'September 1966'. Clicking on this hyperlink takes me to a page headed 'Archive for July, 2009' when it should say 'Archive for September 1966'. All the posts in this archive show the date as 'Saturday, July 11th, 2009'.
What should I modify so that post_date in the Table wp_posts is correctly displayed like before?