Just looking at some older known issues and I came upon this one:
14-MAY 2008: Our email delivery system did not poll some FeedBurner
feeds for updates on 13-May; as a result emails were not delivered and
email subscribers were not reported to FB subscriber totals for that
date. We're investigating this issue.
UPDATE 12:00 CST: We restarted the polling process; starting now, any
feed changes not yet delivered via email should be detected and
delivered, albeit up to three days late, and from this point forward
on your regularly scheduled window. We regret this error!
You may still see 0 email subscribers reported on your Analyze tab's
Feed Stats view for Wednesday 5/14; this should be the last day with
no reported email subscribers in this stretch. (Don't forget your
subscribers didn't just up and disappear; they're still listed under
Publicize > Email Subscriptions > Subscription Management.)
I just validated that all my subscribers are still visible under the
Publicize/Email Subscriptions link, so it seems like this problem is
similar to the one described above. Hopefully Feedburner will "re-
poll" the affected accounts so that the appropriate updates will go
out to our subscribers and we'll see our stats go back up to normal.
> > > > feedburner feed at:
http://feedburner.google.com/fb/a/dashboard?id=scijh65gs89of976nu9q49...quoted text -