For each category I assign to a post, my front page displays a post. In other words, for posts with one category, they only show up once. If the post is tagged "blog" and "stuff", then there will be duplicate posts...even though there is a single URL assigned to the post (no dups in the manage posts screen).
I've looked through my Loop and it looks correct. I have just upgraded to 2.1 and am assuming it has something to do with the switch. Anyone else encountert his?