As per the title follow these steps to reproduce
- Fresh Drupal install with only FeedAPI, FeedAPI Node Process, FeedAPI Common Syndication Parser enabled
- Create Feed to a Delicious RSS URL, for example http://feeds.delicious.com/v2/rss/drupal?count=15
- Import the feed items
- Note that the title of one of the items will be used as the body for a number of other items.
This can be resolved by using SimplePie, but I haven't been able to solve it using Common Syndication Parser.