It sounds strange. Like AJAX feature doesn't work.
Check if files on you site are same size as in original Joomla distributive:
If no - just copy from Joomla's distributive to your site with overwrite existing files.
the sizes are correct. Use more than 10 components that work correctly. Just with this I have this trouble.
I just got by installation message that all was correct, just plugins the instalator could't unpack, so in the folder
- but the submit button for smiles, works in admin MENU.
Is there anything else I should check ?