I installed the plugon on a WP 3.2.2 install and it works well.
I have one frustration though: as it resizes to my screen (and am on a small laptop now), the caption becoemes almostr unreadable.
So I see it resizes but I d like tell itto resize to sthg lightly smaller than the screen.
I tried play in the CSS but does not work?
Then I saw there is this beautiful option in admin:
"Shrink large images to fit smaller screens" with a margin.
I set to 10, or 10px... unfortunately it does not seem to change anything!