Hi, I have the opposite problem of the duplicate problem!
I'm feeding my tumblr into my wordpress. It will only feed 1 post even though i have set it to feed 10 posts.
the reason that comes up in the log is that it's finding "duplicate posts" and not posting them.
and the reason for that: on my tumblr, im posting photos, with no titles or captions.
so in the feed, each post is actually titled "photo". therefore the plugin won't post the past tumblr postings.
i guess i can go into my tumblr and put a title in each post, but that would be a lot of work!
anyone know a work around?