We've had a few reports of strange issues in IE like this. Can you try a few things, and depending on the results, we'd like to access your Joomla admin area to try to make a minor modification to our component which we're planning to release in an upcoming version.
If you could try the following and report your results in IE, that'd be great:
- Disabling the JFBCLogin module - Does the comment box show up?
- Swap the module positions of the Login and Comment box - Does the comment box now show top right, and does the login box show at the bottom of the page
Thanks, we'll get you fixed up soon.