I've gone through all the bug links - updated the header and checked for xml parse errors. My rss feeds validate but bloglines isn't updating the feed. I emailed them and they said it looks fine on their end.
Feedster returns Unable to Retrieve Data when I try and view the cache.
My permalinks look like /%category%/%postname%/ - I let wordpress create the .htaccess which gave me 404s to all my posts, so I had to change the .htaccess (replaced .+ with [_0-9a-z-]+) and my posts work again.
But I can't get rss feed to work on aggregators. And for some reason the pub times are off too.