I’ve enabled the redirect to feedburner feed support again. (after turning it off due to the tag ping issues last week)
The tag issue resolved after changing/adding the tags to the atom feed.
I first will start feedburner to use the xml(1.0/2.0) and rdf feeds. If that keeps working together I will add the atom feed and check if the technorati tags keep working than.

Yes, I think the tag thing is ok: some tags do generate a lot of good traffic overhere ;-)