After upgrading WP a few months ago on one blog - I discovered that it caused posts to display in the wrong order - oldest to newest.
After deactivating plugins I found that when the plugin Simply Exclude was turned off, posts returned to normal order.
The author of the plugin was never able to help. So I've been avoiding updating WP on any blogs until today, and unfortunately the problem is still there with WP 3.2.1
I've also tried two other similar plugins - Ultimate Category Excluder and Front Page Category - both cause the same issue when activated.
Any thoughts? I really need the ability to keep some content off of the front page.