Konqueror downloading changed

Hello, I almost give up. Since the update to KDE 3.1 I can not download e.g .zip files). When klicking on a Internet link for a .zip-file download Konqueror downloads it into a temp dir and opens it in the browser. When right klicking on the link and select "Save Link as" Konqueror does ask for where to store it and creates a file but the file has nothing to do with the original in terms of size. When I get to a site with automatically starting downloads the Konqueror version before KDE 3.1 asked me where to store it. Now the download starts automatically in a temp dir as discribed above. I have no clue what determines this behaviour and therefore do not know what to tweak. Does anybodey of you have a hint? Stefan