Thanx for fast answer.
The problem is that feedburner encodes the URLS, do you know why they do that? It surely must be blockable because it's not okay to encode the entities, they should not mess with the permalinks...
I will check the feedburer account if there are options for disabling this ...

After playing with redir-rules ( and this wont work on 1&1 hosting) I rolled all changes back. But now the feedburner URLs to any post wont work now and go to the startpage. With httpfox I found the difference:


Normal url:
GET /index.php?/archives/363-La-Rose-Falaffel-wie-in-Damaskus.html HTTP/1 ...

Unglaublich!

"Klicktext" und 500 in Tante google eingetippt, ein Treffer bekommen und hier genau die Lösung gefunden! Wahnsinn und Danke!

Ich habe auch einen 1&1 Shared Hosting Paket, kein error_log und die zwei Zeilen haben geholfen!

s9y rockt!