Got the same issue after upgrading to 4.2.0. The meta in posts (date and tags) that used to display on the left of each post disappeared and the post now takes the full width.
Looking into Suffusion Options, the Post Format (Other Graphical Elements > Post Formats > Position for Meta Informations) are still properly set (Pullout on the Left, will reduce your main column width). You may have a look at
http://insideamerica.net/?p=5839 (post date used to show up on the left, aligned under the title, with a reduced column width).
Thanks for your tremendous theme... and support!
Jean