diff --git a/src/KekRozsak/FrontBundle/Controller/ForumController.php b/src/KekRozsak/FrontBundle/Controller/ForumController.php
index b8f6351..11c973c 100644
--- a/src/KekRozsak/FrontBundle/Controller/ForumController.php
+++ b/src/KekRozsak/FrontBundle/Controller/ForumController.php
@@ -7,6 +7,8 @@ use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
 use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;
 use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
 
+use KekRozsak\FrontBundle\Entity\ForumTopicGroup;
+use KekRozsak\FrontBundle\Entity\ForumTopic;
 use KekRozsak\FrontBundle\Entity\ForumPost;
 use KekRozsak\FrontBundle\Form\Type\ForumPostType;
 
@@ -32,16 +34,12 @@ class ForumController extends Controller
 	}
 
 	/**
-	 * @Route("/{topicGroupSlug}", name="KekRozsakFrontBundle_forum_topic_list")
+	 * @Route("/{slug}", name="KekRozsakFrontBundle_forum_topic_list")
 	 * @Template("KekRozsakFrontBundle:Forum:topic_list.html.twig")
+	 * @ParamConverter("topicGroup")
 	 */
-	public function topicListAction($topicGroupSlug)
+	public function topicListAction(ForumTopicgRoup $topicGroup)
 	{
-		$groupRepo = $this->getDoctrine()->getRepository('KekRozsakFrontBundle:ForumTopicGroup');
-
-		if (!($topicGroup = $groupRepo->findOneBySlug($topicGroupSlug)))
-			throw $this->createNotFoundException('A kért témakör nem létezik!');
-
 		return array(
 			'topicGroup' => $topicGroup,
 		);
@@ -50,19 +48,11 @@ class ForumController extends Controller
 	/**
 	 * @Route("/{topicGroupSlug}/{topicSlug}", name="KekRozsakFrontBundle_forum_post_list")
 	 * @Template("KekRozsakFrontBundle:Forum:post_list.html.twig")
+	 * @ParamConverter("topic", options={"mapping"={"topicGroup"="topicGroup", "topicSlug"="slug"}})
+	 * @ParamConverter("topicGroup", options={"mapping"={"topicGroupSlug"="slug"}})
 	 */
-	public function postListAction($topicGroupSlug, $topicSlug)
+	public function postListAction(ForumTopicGroup $topicGroup, ForumTopic $topic)
 	{
-		// Get the topic group based on slug
-		$groupRepo = $this->getDoctrine()->getRepository('KekRozsakFrontBundle:ForumTopicGroup');
-		if (!($topicGroup = $groupRepo->findOneBySlug($topicGroupSlug)))
-			throw $this->createNotFoundException('A kért témakör nem létezik!');
-
-		// Get the topic based on slug
-		$topicRepo = $this->getDoctrine()->getRepository('KekRozsakFrontBundle:ForumTopic');
-		if (!($topic = $topicRepo->findOneBy(array('topicGroup' => $topicGroup, 'slug' => $topicSlug))))
-			throw $this->createNotFoundException('A kért téma nem létezik!');
-
 		// Get the list of posts in the requested topic
 		$postRepo = $this->getDoctrine()->getRepository('KekRozsakFrontBundle:ForumPost');
 		$posts = $postRepo->findBy(array('topic' => $topic), array('createdAt' => 'DESC') /* TODO: , limit, offset */);
@@ -87,8 +77,8 @@ class ForumController extends Controller
 				$em->flush();
 
 				return $this->redirect($this->generateUrl('KekRozsakFrontBundle_forum_post_list', array(
-					'topicGroupSlug' => $topicGroupSlug,
-					'topicSlug'      => $topicSlug,
+					'topicGroupSlug' => $topicGroup->getSlug(),
+					'topicSlug'      => $topic->getSlug(),
 				)));
 			}
 		}
diff --git a/src/KekRozsak/FrontBundle/Entity/ForumPost.php b/src/KekRozsak/FrontBundle/Entity/ForumPost.php
index 38b5036..f441a43 100644
--- a/src/KekRozsak/FrontBundle/Entity/ForumPost.php
+++ b/src/KekRozsak/FrontBundle/Entity/ForumPost.php
@@ -2,12 +2,13 @@
 
 namespace KekRozsak\FrontBundle\Entity;
 
-use Doctrine\Orm\Mapping as ORM;
+use Doctrine\ORM\Mapping as ORM;
 
 use KekRozsak\FrontBundle\Entity\ForumTopic;
 
 /**
  * @ORM\Entity
+ * @ORM\HasLifecycleCallbacks
  * @ORM\Table(name="forum_posts")
  */
 class ForumPost
@@ -128,7 +129,7 @@ class ForumPost
 	public function setTopic(ForumTopic $topic)
 	{
 		$this->topic = $topic;
-		if ($topic->getLastPost()->getCreatedAt() < $this->createdAt)
+		if (!$topic->getLastPost() || ($topic->getLastPost()->getCreatedAt() < $this->createdAt))
 			$topic->setLastPost($this);
 		return $this;
 	}
@@ -142,5 +143,16 @@ class ForumPost
 	{
 		return $this->topic;
 	}
+
+	/**
+	 * Set createdAt before persisting
+	 *
+	 * @ORM\PrePersist
+	 */
+	public function setCreationTime()
+	{
+		if ($this->createdAt === null)
+			$this->createdAt = new \DateTime('now');
+	}
 }
 
diff --git a/src/KekRozsak/FrontBundle/Form/Type/ForumPostType.php b/src/KekRozsak/FrontBundle/Form/Type/ForumPostType.php
index b266f8e..a2cdc12 100644
--- a/src/KekRozsak/FrontBundle/Form/Type/ForumPostType.php
+++ b/src/KekRozsak/FrontBundle/Form/Type/ForumPostType.php
@@ -3,6 +3,7 @@ namespace KekRozsak\FrontBundle\Form\Type;
 
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 
 class ForumPostType extends AbstractType
 {
@@ -31,13 +32,11 @@ class ForumPostType extends AbstractType
 		return 'forum_post';
 	}
 
-	public function getDefaultOptions()
+	public function setDefaultOptions(OptionsResolverInterface $resolver)
 	{
-		$opts = array(
+		$resolver->setDefaults(array(
 			'data_class' => 'KekRozsak\FrontBundle\Entity\ForumPost',
-		);
-
-		return $opts;
+		));
 	}
 }
 
diff --git a/src/KekRozsak/FrontBundle/Form/Type/UserDataType.php b/src/KekRozsak/FrontBundle/Form/Type/UserDataType.php
index e0f7889..763c346 100644
--- a/src/KekRozsak/FrontBundle/Form/Type/UserDataType.php
+++ b/src/KekRozsak/FrontBundle/Form/Type/UserDataType.php
@@ -3,6 +3,7 @@ namespace KekRozsak\FrontBundle\Form\Type;
 
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 
 class UserDataType extends AbstractType
 {
@@ -69,11 +70,11 @@ class UserDataType extends AbstractType
 		return 'user_data';
 	}
 
-	public function getDefaultOptions()
+	public function setDefaultOptions(OptionsResolverInterface $resolver)
 	{
-		return array(
+		$resolver->setDefaults(array(
 			'data_class' => 'KekRozsak\FrontBundle\Entity\UserData'
-		);
+		));
 	}
 }
 
diff --git a/src/KekRozsak/FrontBundle/Resources/views/Forum/post_list.html.twig b/src/KekRozsak/FrontBundle/Resources/views/Forum/post_list.html.twig
index d45d214..612d835 100644
--- a/src/KekRozsak/FrontBundle/Resources/views/Forum/post_list.html.twig
+++ b/src/KekRozsak/FrontBundle/Resources/views/Forum/post_list.html.twig
@@ -3,7 +3,7 @@
 {% extends '::main_template.html.twig' %}
 {% block title %} - Fórum - {{ topicGroup.title }} - {{ topic.title }}{% endblock %}
 {% block content %}
-<h3><a href="{{ path('KekRozsakFrontBundle_forum_main') }}">Fórum</a> - <a href="{{ path('KekRozsakFrontBundle_forum_topic_list', { topicGroupSlug: topicGroup.slug }) }}">{{ topicGroup.title }}</a> - {{ topic.title }}</h3>
+<h3><a href="{{ path('KekRozsakFrontBundle_forum_main') }}">Fórum</a> - <a href="{{ path('KekRozsakFrontBundle_forum_topic_list', {slug: topicGroup.slug}) }}">{{ topicGroup.title }}</a> - {{ topic.title }}</h3>
 <table class="post-lista">
 	<tbody>
 		<tr>
diff --git a/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_group_list.html.twig b/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_group_list.html.twig
index b14f90d..67864f4 100644
--- a/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_group_list.html.twig
+++ b/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_group_list.html.twig
@@ -8,7 +8,7 @@
 <table class="forum-lista">
 	<thead>
 		<tr>
-			<td colspan="2"><a href="{{ path('KekRozsakFrontBundle_forum_topic_list', {topicGroupSlug: topicGroup.slug}) }}">{{ topicGroup.title }}</a></td>
+			<td colspan="2"><a href="{{ path('KekRozsakFrontBundle_forum_topic_list', {slug: topicGroup.slug}) }}">{{ topicGroup.title }}</a></td>
 			<td>Hozzászólások száma</td>
 			<td>Utolsó hozzászólás</td>
 		</tr>
diff --git a/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_list.html.twig b/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_list.html.twig
index b26ded9..2d3c14a 100644
--- a/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_list.html.twig
+++ b/src/KekRozsak/FrontBundle/Resources/views/Forum/topic_list.html.twig
@@ -19,8 +19,12 @@
 			<td><a href="{{ path('KekRozsakFrontBundle_forum_post_list', { topicGroupSlug: topicGroup.slug, topicSlug: topic.slug }) }}">{{ topic.title }}</a></td>
 			<td></td>
 			<td>
+{% if topic.lastPost %}
 				{{ topic.lastPost.createdBy.displayName }}<br />
 				{{ topic.lastPost.createdAt|date('Y-m-d H:i') }}
+{% else %}
+				&nbsp;<br />&nbsp;
+{% endif %}
 			</td>
 		</tr>
 {% endfor %}
diff --git a/src/KekRozsak/SecurityBundle/Form/Type/UserType.php b/src/KekRozsak/SecurityBundle/Form/Type/UserType.php
index 7bf396a..f2cf812 100644
--- a/src/KekRozsak/SecurityBundle/Form/Type/UserType.php
+++ b/src/KekRozsak/SecurityBundle/Form/Type/UserType.php
@@ -3,6 +3,7 @@ namespace KekRozsak\SecurityBundle\Form\Type;
 
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 
 use KekRozsak\FrontBundle\Form\Type\UserDataType;
 
@@ -61,7 +62,7 @@ class UserType extends AbstractType
 		return 'user';
 	}
 
-	public function getDefaultOptions()
+	public function setDefaultOptions(OptionsResolverInterface $resolver)
 	{
 		$opts = array(
 			'data_class' => 'KekRozsak\SecurityBundle\Entity\User',
@@ -69,7 +70,7 @@ class UserType extends AbstractType
 		if ($this->_registration)
 			$opts['validation_groups'] = array('registration');
 
-		return $opts;
+		$resolver->setDefaults($opts);
 	}
 }