images

Please help. I found after upgrading to 3.1 that all my images disappeared (and font sizes have been reset) when I loaded the site into my browser either IE8 or Firfox or google chrome. I have cleared the caches out of the browsers – but this does not fix the problem. If I check via the dashboard the images are in the pages and posts. I have tried to update the pages several times but to no avail. The captions for the images are readable but the image itself is not visible.