TOPIC: error on refresh captch and no refresh after comen

Hello, i have found 2 bugs:

1) When the captcha appears you click on it to change/refresh the captcha. In firefox nothing ocurrs and in opera appears:

<?xml version="1.0" standalone="yes"?><post><id>captcha</id><captcha><![CDATA[<a title="clic to reload a new image" href='javascript:JOSC_reloadCaptcha()'><img src=" www.hosting.compara.org//components/com_...26d386186464fcd4f4c2 " alt="Security Image" />
<input type="hidden" name="security_refid" value="3d11758e5cf726d386186464fcd4f4c2" /></a>]]></captcha><noerror>1</noerror></post>

2) After post a comment, the page does not show the comment. You have to force a page refresh to view it.

I have joomla 1.5.10 and !JoomlaComment 4.0alpha3

Thanks on advance

demo.compojoom.com/the-news/45-joomla-co...portal.html#JOSC_TOP
the captcha refreshes for me. DId you make any language or template changes in your installation?

that page works!,

take a look to my web: hosting.compara.org.

Did you make any changes to the template file?
Can you try it with a different template?

i have tried with all templates in joomla 1.5.10 and no refresh occurrs: on click on captcha and on post comment.

i have not made any changes to the templates. I have not made any changes to the component.

One question.
I have only installed the component...do i have to install any other module or thing?

I see the following javascript error message.
Die Erlaubnis für den Aufruf der Methode Location.toString wurde verweigert

The ajax function returns the right html, but for some reason we are not able to add it to the right place. Looking for some explanation in google brought me those 2 threads:
www.joomlaportal.de/allgemeine-fragen-zu...cation-tostring.html
www.joomlaportal.de/mambots/6554-keine-t...glich.html#post19288

Would you check your joomla configuration?
What do you have under live site?
www.hosting.compara.org/
or
hosting.compara.org/