Images in Admin section missing?

Hi,

We are a bit behind in our version of WP as we have to wait in cue for plugin testing. So, we are using 2.9.2 and we just moved servers with the upgrade to 2.9.2

My problem is this - in the admin panel I am not seeing images. Example: If I look at the themes I am seeing the text on the page but none of the screenshots for the theme.

For avatars - when I upload a new avatar I am not seeing it in the admin area or on the front end of the site. I do see the files in the FTP site in both blog and user folders so I know they are going up.

Does anyone know why this would be happening and how I can fix it. I am not sure if it is an htaccess issues, permissions or something to do with the plugin for avatars.

Thanks,
Helen