diff --git a/forms/cms/contact/contact.js b/forms/cms/contact/contact.js
index f2f92226..2b631fcd 100644
--- a/forms/cms/contact/contact.js
+++ b/forms/cms/contact/contact.js
@@ -14,7 +14,7 @@ Vn.Contact = new Class
 	
 	,refreshCaptcha: function ()
 	{
-		var url = 'rest.php?method=captcha';
+		var url = 'rest.php?method=core/captcha';
 		this.$('captcha-img').src = url +'&stamp='+ new Date ().getTime ();
 	}
 	
diff --git a/forms/cms/contact/ui.xml b/forms/cms/contact/ui.xml
index 73bc3a5c..3121df5a 100755
--- a/forms/cms/contact/ui.xml
+++ b/forms/cms/contact/ui.xml
@@ -14,7 +14,7 @@
 			<form
 				id="contact-form"
 				method="post"
-				action="rest.php?method=contact">
+				action="json.php?method=misc/contact">
 				<div class="form-group">
 					<label><t>Name</t></label>
 					<input type="text" name="name"/>
diff --git a/js/hedera/app.js b/js/hedera/app.js
index c1f19258..214df51b 100644
--- a/js/hedera/app.js
+++ b/js/hedera/app.js
@@ -169,7 +169,7 @@ Vn.App = new Class
 			,'stack': error.stack
 		};
 	
-		var request = new Vn.JsonRequest ('log');
+		var request = new Vn.JsonRequest ('core/log');
 		request.send (params);
 	}
 	
diff --git a/rest/core/login.php b/rest/core/login.php
index 4fb9e44c..c6bf1710 100755
--- a/rest/core/login.php
+++ b/rest/core/login.php
@@ -7,8 +7,52 @@ class Login extends Vn\Web\JsonRequest
 	function run ()
 	{
 		$this->login ();
+		$this->updateCredentials ();
 		return TRUE;
 	}
+	
+	/**
+	 * Updates the user credentials in other user databases like Samba.
+	 **/
+	function updateCredentials ()
+	{
+		$db = $this->getSysConn ();
+		
+		$hasAccount = $db->getValue (
+			'SELECT COUNT(*) > 0
+				FROM account.user u
+					JOIN account.account a ON u.id = a.user_id
+				WHERE u.name = #',
+			[$_SESSION['user']]
+		);
+		
+		if (!$hasAccount)
+			return;
+
+		$sshConf = $db->getRow ('SELECT host, user, password FROM ssh_config');
+	
+		$ssh = ssh2_connect ($sshConf['host']);
+		$sshOk = $ssh && ssh2_auth_password ($ssh,
+			$sshConf['user'], base64_decode ($sshConf['password']));
+
+		if (!$sshOk)
+		{
+			error_log ("Can't connect to SSH server {$sshConf['host']}");
+			return;
+		}
+		
+		$user = $this->escape ($_SESSION['user']);
+		$pass = $this->escape ($_SESSION['password']);
+		ssh2_exec ($ssh, "samba-tool user add \"$user\" \"$pass\"");
+	}
+	
+	/**
+	 * Escapes the double cuotes from an string.
+	 **/
+	function escape ($str)
+	{
+		return str_replace ('"', '\\"', $str);
+	}
 }
 
 ?>
diff --git a/rest/dms/add.php b/rest/dms/add.php
index aaade4fc..37a0d08c 100644
--- a/rest/dms/add.php
+++ b/rest/dms/add.php
@@ -7,7 +7,7 @@ use Vn\Lib;
 /**
  * Adds a document to the Document Management System.
  **/
-class DmsAdd extends Vn\Web\JsonRequest
+class Add extends Vn\Web\JsonRequest
 {
 	function run ()
 	{
diff --git a/rest/image/resize.php b/rest/image/resize.php
index 826828a2..865b885d 100644
--- a/rest/image/resize.php
+++ b/rest/image/resize.php
@@ -13,7 +13,7 @@ use Vn\Hedera\Image;
  * @param integer $maxWidth The maximum width of resized image in pixels
  * @param boolean $rewrite Wether to rewrite the destination file if it exits
  **/
-class ImageResize extends ImageMethod
+class Resize extends ImageMethod
 {
 	function run ()
 	{
diff --git a/rest/image/sync.php b/rest/image/sync.php
index 42239985..396e8c3b 100644
--- a/rest/image/sync.php
+++ b/rest/image/sync.php
@@ -8,7 +8,7 @@ use Vn\Hedera\Image;
  * Syncronizes the data directory with the database, this may take
  * some time.
  **/
-class ImageSync extends ImageRequest
+class Sync extends ImageRequest
 {
 	private $trashSubdir;
 
diff --git a/rest/image/thumb.php b/rest/image/thumb.php
index 215a3a08..f5a7fdbe 100644
--- a/rest/image/thumb.php
+++ b/rest/image/thumb.php
@@ -12,7 +12,7 @@ use Vn\Hedera\Image;
  * @param integer $width The width of the thumb
  * @param integer $height The height of the thumb
  **/
-class ImageThumb extends ImageRequest
+class Thumb extends ImageRequest
 {
 	function run ()
 	{
diff --git a/rest/image/upload.php b/rest/image/upload.php
index e102770b..d08c831a 100755
--- a/rest/image/upload.php
+++ b/rest/image/upload.php
@@ -8,7 +8,7 @@ use Vn\Hedera\Image;
 /**
  * Uploads a file creating its corresponding sizes.
  **/
-class ImageUpload extends ImageRequest
+class Upload extends ImageRequest
 {
 	static function run ()
 	{
diff --git a/rest/misc/contact.php b/rest/misc/contact.php
index a49b6d47..88e1e03f 100755
--- a/rest/misc/contact.php
+++ b/rest/misc/contact.php
@@ -17,21 +17,19 @@ class Contact extends Vn\Web\JsonRequest
 			,'phone'
 			,'email'
 			,'message'
-			,'captcha'
 		];
 
-		if (!$this->checkParams ($_REQUEST, $params)
-		|| !isset ($_SESSION['captcha']))
+		if (!$this->checkParams ($_REQUEST, $params))
 			throw new Lib\UserException  (s('Missing parameters'), 'missingParams');
 			
 		// Checks the antispam code
-			
+
 		$lastCaptcha = $_SESSION['captcha'];
 		unset ($_SESSION['captcha']);
 		
-		if ($_REQUEST['captcha'] !== $lastCaptcha)
+		if (empty ($_REQUEST['captcha']) || $_REQUEST['captcha'] !== $lastCaptcha)
 			throw new Lib\UserException  (s('Wrong captcha'), 'wrongCaptcha');
-			
+
 		// Sends the mail
 		
 		$db = $this->getSysConn ();
diff --git a/rest/tpv/confirm-mail.php b/rest/tpv/confirm-mail.php
index df5557ec..c9dcb54c 100644
--- a/rest/tpv/confirm-mail.php
+++ b/rest/tpv/confirm-mail.php
@@ -6,7 +6,7 @@ require_once (__DIR__.'/tpv.php');
 /**
  * Gets transaction confirmations from the IMAP mailbox.
  **/
-class TpvConfirmMail extends Vn\Lib\Method
+class ConfirmMail extends Vn\Lib\Method
 {
 	function run ()
 	{
diff --git a/rest/tpv/confirm-post.php b/rest/tpv/confirm-post.php
index 9716c28b..050ff9c6 100644
--- a/rest/tpv/confirm-post.php
+++ b/rest/tpv/confirm-post.php
@@ -6,7 +6,7 @@ require_once (__DIR__.'/tpv.php');
 /**
  * Gets transaction confirmation from HTTP POST.
  **/
-class TpvConfirmPost extends Vn\Web\HttpRequest
+class ConfirmPost extends Vn\Web\HttpRequest
 {
 	function run ()
 	{
diff --git a/rest/tpv/confirm-soap.php b/rest/tpv/confirm-soap.php
index 3a757362..e3183f75 100644
--- a/rest/tpv/confirm-soap.php
+++ b/rest/tpv/confirm-soap.php
@@ -7,7 +7,7 @@ require_once (__DIR__.'/tpv.php');
 /**
  * Gets transaction confirmation from SOAP service.
  **/
-class TpvConfirmSoap extends Vn\Web\HttpRequest
+class ConfirmSoap extends Vn\Web\HttpRequest
 {
 	function run ()
 	{
diff --git a/rest/tpv/transaction.php b/rest/tpv/transaction.php
index 9e832740..d9b7deac 100755
--- a/rest/tpv/transaction.php
+++ b/rest/tpv/transaction.php
@@ -8,7 +8,7 @@ use Vn\Lib;
 /**
  * Starts a new TPV transaction and returns the params.
  **/
-class TpvTransaction extends Vn\Web\JsonRequest
+class Transaction extends Vn\Web\JsonRequest
 {
 	function run ()
 	{