"curl" makes form submission result in 404

[eluser]Bramme[/eluser]

Code:

<form action="<?=$this->uri->uri_string()?>" method="post">
<div class="left">
<p>
    <label for="title">title<br />
    &lt;input type="text" name="title" id="title" value="&lt;?=$this-&gt;validation->title?&gt;" />
    </label>

</p>
</div>
<p style="clear: both">
    &lt;input type="submit" name="submNewTutorial" value="Submit" /&gt;
</p>
&lt;/form&gt;

even this causes the error. I'll try separating all the fields.