V2-Rounded Theme Problems since Upgrading to 2.1

I love V2-Rounded but I’m thinking of ditching it as it doesn’t seem to be working properly since I upgraded to wordpress 2.1.

My images will no longer center as you’ll see from my site http://www.posiesplace.net

I previously thought that the problem was with WordPress it was only when I tested another theme that I found the formatting works perfectly well with the other themes I have installed.

Does anyone know what I can do to reslove this as I really don’t want to ditch this theme as it has proved very popular with my readers.