I'm using the great theme Suffusion in its latest version (3.3.7). I really like it
On the main page of my site, I have a static page that postes my post (configured in Settings - Reading).
I would like to have only the 'Excerpt' shown of my posts, but as for now, it shows always the whole post.
I configured also to show the Summary only (configured in Settings - Reading - For each article in a feed..).
In Suffusion, I use the single left side bar theme.