bill - 6:31 am on Mar 27, 2010 (gmt 0)
Glad that worked out for you.
One hypothesis is that Netvibes & google reader get access to former/deleted posts because I've been adding the feed while being logged into my blog as an admin.
Somehow you published these posts at some point and they were added to the feed. The aggregator sites picked up the posts then. I haven't played with WP for years so I'm not sure about the back-end operation. Most blog software won't add a post to the feed until you publish it live.