You didn't delete the old feed though, did you ?
Check the list of email subscribers for all your feeds that are using
In Feedburner, open each feed and click the 'See more about your subscribers'
link, then 'FeedBurner Email Subscriptions -> Manage Your Email Subscriber List'
That'll get you to Publicize / Email Subscriptions / Subscription Management
Are you subscribed to the feed(s) by email with any of your own email addresses ?
Apparently, on the 11th
, you had a non-functional follow by email gadget, so nobody would've been able to subscribe anyway;
, there was no uri specified like there is now. ( uri=blogspot/fNLSO )