[Opserty]

To troubleshoot this, please create a new Style with no Parent set. Now browse the forum using this new style, do you still have the same problems?

If your problem still exists, reupload all the original vB non-image files (except install.php). Make sure you upload these in ASCII format and overwrite the ones on the server.

If so, disable your plugins, then see if you still have this problem.
Note: To temporarily disable the plugin system, edit config.php and add this line right under <?php

PHP Code:

define('DISABLE_HOOKS', true);