[support] teaser trimming sometimes not working

Hi All, I've noticed sometimes that when the teaser gets created it doesn't apply the trimming length I have set (600 chars). It only happens sometimes, and I'm baffled to what is causing this. Is this a known problem? is there a fix? drupal version. 4.6.5 you can see the effect I'm talking about here: http://sydney.indymedia.org/newswire thankyou Cameron