diff --git a/addressbook/csv_import.php b/addressbook/csv_import.php
index c9ee296840..50f095d064 100644
--- a/addressbook/csv_import.php
+++ b/addressbook/csv_import.php
@@ -254,8 +254,8 @@ switch($_POST['action'])
 		break;
 
 	case 'next':
-		$_POST['addr_fields'] = unserialize(stripslashes($_POST['addr_fields']));
-		$_POST['trans']       = unserialize(stripslashes($_POST['trans']));
+		$_POST['addr_fields'] = json_decode(stripslashes($_POST['addr_fields']));
+		$_POST['trans']       = json_decode(stripslashes($_POST['trans']));
 		// fall-through
 	case 'import':
 		$hiddenvars = html::input_hidden(array(
diff --git a/infolog/inc/class.infolog_bo.inc.php b/infolog/inc/class.infolog_bo.inc.php
index 55da7be4b5..2436f2f643 100644
--- a/infolog/inc/class.infolog_bo.inc.php
+++ b/infolog/inc/class.infolog_bo.inc.php
@@ -610,6 +610,7 @@ class infolog_bo
 			// pre-cache title and file access
 			self::set_link_cache($data);
 		}
+error_log(__METHOD__."() mb_strlen(info_subject='{$this->data['info_subject']}')=".mb_strlen($this->data['info_subject']));
 
 		return $data;
 	}
@@ -710,6 +711,7 @@ class infolog_bo
 	function write(&$values_in, $check_defaults=true, $touch_modified=true, $user2server=true,
 		$skip_notification=false, $throw_exception=false, $purge_cfs=null)
 	{
+error_log(__METHOD__."() mb_strlen(info_subject='$values_in[info_subject]')=".mb_strlen($values_in['info_subject']));
 		$values = $values_in;
 		//echo "boinfolog::write()values="; _debug_array($values);
 		if (!$values['info_id'] && !$this->check_access(0,EGW_ACL_EDIT,$values['info_owner']) &&
diff --git a/infolog/inc/class.infolog_so.inc.php b/infolog/inc/class.infolog_so.inc.php
index c520f84a52..d8a2203b7a 100644
--- a/infolog/inc/class.infolog_so.inc.php
+++ b/infolog/inc/class.infolog_so.inc.php
@@ -409,6 +409,7 @@ class infolog_so
 			$this->data['#'.$row['info_extra_name']] = $row['info_extra_value'];
 		}
 		//error_log(__METHOD__.'('.array2string($where).') returning '.array2string($this->data));
+error_log(__METHOD__."() mb_strlen(info_subject='{$this->data['info_subject']}')=".mb_strlen($this->data['info_subject']));
 		return $this->data;
 	}
 
diff --git a/infolog/inc/class.infolog_ui.inc.php b/infolog/inc/class.infolog_ui.inc.php
index 8901af1d75..2a3a9e9ad6 100644
--- a/infolog/inc/class.infolog_ui.inc.php
+++ b/infolog/inc/class.infolog_ui.inc.php
@@ -1557,6 +1557,7 @@ class infolog_ui
 	{
 		if (($submit = is_array($content)))
 		{
+error_log(__METHOD__."() mb_strlen(info_subject='$content[info_subject]')=".mb_strlen($content['info_subject']));
 			//echo "infolog_ui::edit: content="; _debug_array($content);
 			$info_id   = $content['info_id'];
 			$action    = $content['action'];    unset($content['action']);
@@ -1751,7 +1752,7 @@ class infolog_ui
 
 			$content = $this->bo->read( $info_id || $action != 'sp' ? $info_id : $action_id );
 			if (!(strpos($content['info_addr'],',')===false) && strpos($content['info_addr'],', ')===false) $content['info_addr'] = str_replace(',',', ',$content['info_addr']);
-			foreach(array('info_subject', 'info_des') as $key)
+/*			foreach(array('info_subject', 'info_des') as $key)
 			{
 				if(!isset($content[$key]) || strlen($content[$key]) < 75)
 				{
@@ -1789,7 +1790,7 @@ class infolog_ui
 				}
 				$content[$key] = join("\n",$clarray);
 				unset($clarray);
-			}
+			}*/
 			if (is_numeric($_REQUEST['cat_id']))
 			{
 				$content['info_cat'] = (int) $_REQUEST['cat_id'];
diff --git a/phpgwapi/inc/class.html.inc.php b/phpgwapi/inc/class.html.inc.php
index 9e79896be9..81d2e90481 100644
--- a/phpgwapi/inc/class.html.inc.php
+++ b/phpgwapi/inc/class.html.inc.php
@@ -455,7 +455,7 @@ class html
 		{
 			if (is_array($value))
 			{
-				$value = serialize($value);
+				$value = json_encode($value);
 			}
 			if (!$ignore_empty || $value && !($name == 'filter' && $value == 'none'))	// dont need to send all the empty vars
 			{
diff --git a/preferences/inc/class.uiaclprefs.inc.php b/preferences/inc/class.uiaclprefs.inc.php
index fc2811e24e..5804f8e085 100644
--- a/preferences/inc/class.uiaclprefs.inc.php
+++ b/preferences/inc/class.uiaclprefs.inc.php
@@ -105,7 +105,7 @@ class uiaclprefs
 		if ($_POST['save'] || $_POST['apply'])
 		{
 			$processed = $_POST['processed'];
-			$to_remove = unserialize(urldecode($processed));
+			$to_remove = json_decode(urldecode($processed));
 			foreach($to_remove as $uid)
 			{
 				//echo "deleting acl-records for $uid=".$GLOBALS['egw']->accounts->id2name($uid)." and $acl_app<br>\n";
@@ -276,7 +276,7 @@ class uiaclprefs
 			'search_type' => is_array($query_types) ? html::select('search_type',$search_type,$query_types) : '',
 			'search_value' => isset($query) && $query ? html::htmlspecialchars($query) : '',
 			'search'       => lang('search'),
-			'processed'    => urlencode(serialize($processed))
+			'processed'    => urlencode(json_encode($processed))
 		);
 
 		$letters = lang('alphabet');