diff --git a/htdocs/application/controllers/main.php b/htdocs/application/controllers/main.php
index 723dfe7..8ccae55 100644
--- a/htdocs/application/controllers/main.php
+++ b/htdocs/application/controllers/main.php
@@ -573,7 +573,7 @@ class Main extends CI_Controller
 		//get "word"
 		$pool = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ@';
 		$str = '';
-		for ($i = 0;$i < 4;$i++) 
+		for ($i = 0;$i < 8;$i++) 
 		{
 			$str.= substr($pool, mt_rand(0, strlen($pool) - 1) , 1);
 		}
@@ -600,17 +600,35 @@ class Main extends CI_Controller
 	function _valid_captcha($text) 
 	{
 		
-		if (config_item('enable_captcha')) 
+		if (config_item('enable_captcha') && $this->db_session->userdata('is_human') === false) 
 		{
 			$this->form_validation->set_message('_valid_captcha', lang('captcha'));
 			
 			if ($this->use_recaptcha) 
 			{
-				return $this->_valid_recaptcha();
+				
+				if ($this->_valid_recaptcha()) 
+				{
+					$this->db_session->set_userdata('is_human', true);
+					return true;
+				}
+				else
+				{
+					return false;
+				}
 			}
 			else
 			{
-				return strtolower($text) == strtolower($this->db_session->userdata('captcha'));
+				
+				if (strtolower($text) == strtolower($this->db_session->userdata('captcha'))) 
+				{
+					$this->db_session->set_userdata('is_human', true);
+					return true;
+				}
+				else
+				{
+					return false;
+				}
 			}
 		}
 		else
diff --git a/htdocs/application/helpers/captcha_helper.php b/htdocs/application/helpers/captcha_helper.php
index 451317e..770b6a5 100644
--- a/htdocs/application/helpers/captcha_helper.php
+++ b/htdocs/application/helpers/captcha_helper.php
@@ -286,7 +286,7 @@ if (!function_exists('display_captcha'))
 			'word' => $word,
 			'img_path' => '',
 			'img_url' => '',
-			'img_width' => '110',
+			'img_width' => '180',
 			'img_height' => '40',
 			'font_path' => '',
 			'expiration' => 7200
diff --git a/htdocs/themes/bootstrap/views/defaults/paste_form.php b/htdocs/themes/bootstrap/views/defaults/paste_form.php
index 625e4ef..85e5b6b 100644
--- a/htdocs/themes/bootstrap/views/defaults/paste_form.php
+++ b/htdocs/themes/bootstrap/views/defaults/paste_form.php
@@ -107,7 +107,7 @@
 			<input type="hidden" value="<?php echo $reply; ?>" name="reply" />
 		<?php } ?>
 		
-		<?php if($this->config->item('enable_captcha')){ ?>
+        <?php if($this->config->item('enable_captcha') && $this->db_session->userdata('is_human') === false){ ?>
 			<div class="item_group">
 				<div class="item item_captcha">
 					<label for="captcha"><?php echo lang('paste_spam'); ?>
@@ -116,7 +116,7 @@
                     <?php if($use_recaptcha){
                         echo recaptcha_get_html($recaptcha_publickey);
                     } else { ?>
-                        <img class="captcha" src="<?php echo site_url('view/captcha'); ?>?<?php echo date('U', mktime()); ?>" alt="captcha" width="110" height="40" />
+                        <img class="captcha" src="<?php echo site_url('view/captcha'); ?>?<?php echo date('U', mktime()); ?>" alt="captcha" width="180" height="40" />
                         <input value="" type="text" id="captcha" name="captcha" tabindex="2" maxlength="32" />
                     <?php } ?>
 				</div>
diff --git a/htdocs/themes/default/css/main.css b/htdocs/themes/default/css/main.css
index 8666e92..bab2d36 100644
--- a/htdocs/themes/default/css/main.css
+++ b/htdocs/themes/default/css/main.css
@@ -146,6 +146,7 @@ h4 {
 #captcha {
     position: relative;
     left: 140px;
+    width: 174px;
 }
 
 .form_wrapper .item_group .item input, .form_wrapper .item_group .item select {
diff --git a/htdocs/themes/default/views/defaults/paste_form.php b/htdocs/themes/default/views/defaults/paste_form.php
index f6fbdc3..38de2d2 100644
--- a/htdocs/themes/default/views/defaults/paste_form.php
+++ b/htdocs/themes/default/views/defaults/paste_form.php
@@ -104,7 +104,7 @@
 		<input type="hidden" value="<?php echo $reply; ?>" name="reply" />
 <?php } ?>
 
-<?php if($this->config->item('enable_captcha')){ ?>
+<?php if($this->config->item('enable_captcha') && $this->db_session->userdata('is_human') === false){ ?>
 		<div class="item_group">
 			<div class="item item_captcha">
 				<label for="captcha"><?php echo lang('paste_spam'); ?>
@@ -113,7 +113,7 @@
 <?php if($use_recaptcha){
     echo recaptcha_get_html($recaptcha_publickey);
 } else { ?>
-                <img class="captcha" src="<?php echo site_url('view/captcha'); ?>?<?php echo date('U', mktime()); ?>" alt="captcha" width="110" height="40" />
+                <img class="captcha" src="<?php echo site_url('view/captcha'); ?>?<?php echo date('U', mktime()); ?>" alt="captcha" width="180" height="40" />
                 <input value="" type="text" id="captcha" name="captcha" tabindex="2" maxlength="32" />
 <?php } ?>
 			</div>
diff --git a/htdocs/themes/geocities/views/defaults/paste_form.php b/htdocs/themes/geocities/views/defaults/paste_form.php
index 4afefd0..9ac22e8 100644
--- a/htdocs/themes/geocities/views/defaults/paste_form.php
+++ b/htdocs/themes/geocities/views/defaults/paste_form.php
@@ -107,7 +107,7 @@
 			<input type="hidden" value="<?php echo $reply; ?>" name="reply" />
 		<?php } ?>
 		
-		<?php if($this->config->item('enable_captcha')){ ?>
+        <?php if($this->config->item('enable_captcha') && $this->db_session->userdata('is_human') === false){ ?>
 			<div class="item_group">
 				<div class="item item_captcha">
 					<label for="captcha"><?php echo lang('paste_spam'); ?>
@@ -116,7 +116,7 @@
                     <?php if($use_recaptcha){
                         echo recaptcha_get_html($recaptcha_publickey);
                     } else { ?>
-                        <img class="captcha" src="<?php echo site_url('view/captcha'); ?>?<?php echo date('U', mktime()); ?>" alt="captcha" width="110" height="40" />
+                        <img class="captcha" src="<?php echo site_url('view/captcha'); ?>?<?php echo date('U', mktime()); ?>" alt="captcha" width="180" height="40" />
                         <input value="" type="text" id="captcha" name="captcha" tabindex="2" maxlength="32" />
                     <?php } ?>
 				</div>