Facebook like button don't work

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HTML

IFrame

I've used the form from facebook developers like button official page to create code to get a "like" button, but then I press the like button it works for a second but then the "like effect" disappears.

I have a test page here:

<a href="http://apkitchen.voku-online.de/teste.php">http://apkitchen.voku-online.de/teste.php</a>[<a href="http://apkitchen.voku-online.de/teste.php" target="_blank" title="New Window">^</a>]

and the iframe it's here:

<pre><iframe src="http://www.facebook.com/plugins/like.php?app_id=146289078779327&amp;href=http%3A%2F%2Fapkitchen.voku-online.de/teste.php.vu%2F&amp;send=false&amp;layout=standard&amp;width=450&amp;show_faces=false&amp;action=like&amp;colorscheme=light&amp;font&amp;height=35" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:450px; height:35px;" allowTransparency="true"></iframe>

I've absolutely nothing more on that page, but even so that button don't works.

What could be the problem?

I tried on Chrome 12 And Firefox 4.01, and don't work in neither.

EDIT: I noticed that sometimes it works, but when refreshing the page it's not "liked" anymore and then it does not work.

P.S: I deleted the previous thread because I thought I solved the problem, but don't :(