Has the rendering of the snowflake effect changed? I don't sequence nearly as much as i should but i usually do try to keep up with all the releases and looking through the release notes i don't see that it did. What i recall was a flake would fall with out a trail (I opened a previously rendered sequence with the effect to verify) , but dropping a new snowflake effect in sequence in .74 the snowflakes all have trails that stay on the whole duration of the effect. I looked around and played with all the settings and i cannot find a way to get rid of the trail.