Hello, after searching around an hour, found that it must be something with css.
If I switch my site (where I've got the same problem with that "after reply massage") to another
template, everything works fine. Maybe the joomla guys changed something with the system.css or something similar.
worked half an hour with Firebug, without solution...
Hope this was helpful
Edit: Day later- 15 Minutes later-Solved-
I compared an index.php from my template (not working with "after reply message" )with an index.php form a working template... At the point, where the index.php starts to load the real content (after body and banners and so on) i found in the working php: <jdoc:include type="message" /> which was missing in the not working one.
Copied that to my php at a slightly good position and now it works !!!
Some more things are to be done in the css, because the format is not so good, but thats part of the template.
So the fault was the template !!!
Regards
Roland