YARPP shows results only in widget, BUT NOT under post

hey guys

for example here http://polizeinewsberlin.de/581/201107/in-brand-gesetztes-auto-pankow/

in widgets (Ähnliche Artikel) i see the yarpp-results, but not under the post. the strange thing: if i go back into admin > yarpp > save changes, i see everyhting fine under the post, but only until 2 or 3 reloads, then the related articles disappear (but they’re still available in widgets).

any idea?

thanks
greg