I'm having a problem, after connecting to my page, then selecting 'edit' the graphics shift, even if I don't make any changes. I have no idea why this is happening, but Adobe contribute support suggested posting the problem here. Here's the link http://www.onlinefax.com/contact.html
It happens on all pages of the site so seems it must be in the css.
Below is the web page before clicking 'edit' in Contribute CS5.
Below is 'edit' mode for this web page. Notice the graphics shift.
Below is the browser preview, which is the same way it gets published back to the site. Notice the shifted graphics banner.