Content not aligned in columns - Wordpress

Hi, I have a site using the Woo theme Coda and I’m having problems with the content in the two main columns. It seems that if I add content (a widget) in the left column, the content in the right is moved down below where the content in the left column ends - please take a look at I have tested this on several different browsers.
Since this theme came with the site as I bought it, I can’t use the Woo support area…

Thanks Gary, just fixed it…

Am unable to replicate in either IE8 or FF3.6. Have you fixed it?