Slug regenerating it self - propel

Question

I'm using the sluggable behavior within Propel to work alongside my CMS/Framework.
Weird thing is, if you change something else on the page, other than the slug, the slug will automatically regenerate using what appears to be the values of the parent element, i.e.
from /slug to id-3-parentid-2-keywords-null-templateid-1-publishdate-null-slug-slug-sortablerank-2-createdat-null-updatedat-null-pagei18ns-pagei18n_0-id-3-locale-en_gb-title-tsadf-description-null-content-p-ssadf-p-page-recursion-pagei18n_1-id-3-locale-fr_fr-title-a which is rather odd.
The only solution I've found so far, is to simply call setSlug to a random value and then set the correct value afterwards.
$page->setSlug('x');
$page->setSlug($this->request->post->get('slug'));
and my schema:
<table name="page" phpName="Page">
<!-- Columns -->
<column name="id" type="integer" required="true" primaryKey="true" autoIncrement="true"/>
<column name="parent_id" type="integer" required="false" />
<column name="title" type="varchar" size="255" required="true" />
<column name="description" type="varchar" size="255" required="false" />
<column name="keywords" type="varchar" size="255" required="false" />
<column name="content" type="longvarchar" required="false" />
<column name="template_id" type="integer" required="false" />
<column name="publish_date" type="date" required="false" />
<!-- Behaviors -->
<behavior name="i18n">
<parameter name="i18n_columns" value="title, description, content" />
<parameter name="default_locale" value="en_GB" />
</behavior>
<behavior name="sluggable">
<parameter name="permanent" value="true" />
</behavior>
<behavior name="sortable" />
<behavior name="timestampable" />
<!-- Foreign Keys -->
<foreign-key foreignTable="page_template">
<reference local="template_id" foreign="id"/>
</foreign-key>
<foreign-key foreignTable="page">
<reference local="parent_id" foreign="id"/>
</foreign-key>
</table>
Note: I've tried with and without the permanent param.
Any idea's anyone?