diff --git a/rainloop/v/0.0.0/app/libraries/MailSo/Base/Utils.php b/rainloop/v/0.0.0/app/libraries/MailSo/Base/Utils.php
index 0be3ffa3d..332b54de4 100644
--- a/rainloop/v/0.0.0/app/libraries/MailSo/Base/Utils.php
+++ b/rainloop/v/0.0.0/app/libraries/MailSo/Base/Utils.php
@@ -1999,14 +1999,28 @@ class Utils
 	}
 
 	/**
-	 * @param string $sFunctionName
+	 * @param string|array $mFunctionNameOrNames
 	 *
 	 * @return bool
 	 */
-	public static function FunctionExistsAndEnabled($sFunctionName)
+	public static function FunctionExistsAndEnabled($mFunctionNameOrNames)
 	{
 		static $aCache = null;
-		if (empty($sFunctionName) || !\function_exists($sFunctionName) || !\is_callable($sFunctionName))
+
+		if (\is_array($mFunctionNameOrNames))
+		{
+			foreach ($mFunctionNameOrNames as $sFunctionName)
+			{
+				if (!\MailSo\Base\Utils::FunctionExistsAndEnabled($sFunctionName))
+				{
+					return false;
+				}
+			}
+
+			return true;
+		}
+
+		if (empty($mFunctionNameOrNames) || !\function_exists($mFunctionNameOrNames) || !\is_callable($mFunctionNameOrNames))
 		{
 			return false;
 		}
@@ -2017,7 +2031,7 @@ class Utils
 			$sDisableFunctions = \is_string($sDisableFunctions) && 0 < \strlen($sDisableFunctions) ? $sDisableFunctions : '';
 
 			$aCache = \explode(',', $sDisableFunctions);
-			$aCache = is_array($aCache) && 0 < count($aCache) ? $aCache : array();
+			$aCache = \is_array($aCache) && 0 < \count($aCache) ? $aCache : array();
 
 			if (\extension_loaded('suhosin'))
 			{
@@ -2025,17 +2039,17 @@ class Utils
 				 $sSuhosin = \is_string($sSuhosin) && 0 < \strlen($sSuhosin) ? $sSuhosin : '';
 
 				 $aSuhosinCache = \explode(',', $sSuhosin);
-				 $aSuhosinCache = is_array($aSuhosinCache) && 0 < count($aSuhosinCache) ? $aSuhosinCache : array();
+				 $aSuhosinCache = \is_array($aSuhosinCache) && 0 < \count($aSuhosinCache) ? $aSuhosinCache : array();
 
 				 if (0 < \count($aSuhosinCache))
 				 {
-					 $aCache = array_merge($aCache, $aSuhosinCache);
-					 $aCache = array_unique($aCache);
+					 $aCache = \array_merge($aCache, $aSuhosinCache);
+					 $aCache = \array_unique($aCache);
 				 }
 			}
 		}
 
-		return !\in_array($sFunctionName, $aCache);
+		return !\in_array($mFunctionNameOrNames, $aCache);
 	}
 
 	/**
diff --git a/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php b/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php
index 7e0c5186b..a0aae1f8d 100644
--- a/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php
+++ b/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php
@@ -673,16 +673,22 @@ class Actions
 
 			switch (true)
 			{
-				case 'APC' === $sDriver && \MailSo\Base\Utils::FunctionExistsAndEnabled('apc_store'):
+				case ('APC' === $sDriver || 'APCU' === $sDriver) &&
+					\MailSo\Base\Utils::FunctionExistsAndEnabled(array(
+						'apc_store', 'apc_fetch', 'apc_delete', 'apc_clear_cache')):
+					
 					$oDriver = \MailSo\Cache\Drivers\APC::NewInstance();
 					break;
-				case 'MEMCACHE' === $sDriver && \MailSo\Base\Utils::FunctionExistsAndEnabled('memcache_connect'):
-				case 'MEMCACHED' === $sDriver && \MailSo\Base\Utils::FunctionExistsAndEnabled('memcache_connect'):
+
+				case ('MEMCACHE' === $sDriver || 'MEMCACHED' === $sDriver) &&
+					\MailSo\Base\Utils::FunctionExistsAndEnabled('memcache_connect'):
+					
 					$oDriver = \MailSo\Cache\Drivers\Memcache::NewInstance(
 						$this->Config()->Get('labs', 'fast_cache_memcache_host', '127.0.0.1'),
 						(int) $this->Config()->Get('labs', 'fast_cache_memcache_port', 11211)
 					);
 					break;
+
 				default:
 					$oDriver = \MailSo\Cache\Drivers\File::NewInstance(APP_PRIVATE_DATA.'cache');
 					break;
@@ -749,9 +755,17 @@ class Actions
 				$this->oLogger->WriteEmptyLine();
 
 				$oHttp = $this->Http();
+				
 				$this->oLogger->Write('[DATE:'.\gmdate('d.m.y').'][RL:'.APP_VERSION.'][PHP:'.PHP_VERSION.'][IP:'.
 					$oHttp->GetClientIp().'][PID:'.(\MailSo\Base\Utils::FunctionExistsAndEnabled('getmypid') ? \getmypid() : 'unknown').
 					'][GUID:'.\MailSo\Log\Logger::Guid().']');
+				
+				$this->oLogger->Write(
+					'[APC:'.(\MailSo\Base\Utils::FunctionExistsAndEnabled('apc_fetch') ? 'on' : 'off').']'.
+					'[MB:'.(\MailSo\Base\Utils::FunctionExistsAndEnabled('mb_convert_encoding') ? 'on' : 'off').']'.
+					'[PDO:'.(\class_exists('PDO') ? \implode(',', \PDO::getAvailableDrivers()) : 'off').']'.
+					'[Streams:'.\implode(',', \stream_get_transports()).']'
+				);
 
 				$this->oLogger->Write(
 					'['.$oHttp->GetMethod().'] '.$oHttp->GetScheme().'://'.$oHttp->GetHost(false, false).$oHttp->GetServer('REQUEST_URI', ''),
diff --git a/rainloop/v/0.0.0/app/libraries/RainLoop/Api.php b/rainloop/v/0.0.0/app/libraries/RainLoop/Api.php
index 7d3db27da..750fbf377 100644
--- a/rainloop/v/0.0.0/app/libraries/RainLoop/Api.php
+++ b/rainloop/v/0.0.0/app/libraries/RainLoop/Api.php
@@ -186,4 +186,13 @@ class Api
 
 		return false;
 	}
+
+	/**
+	 * @return bool
+	 */
+	public static function LogoutCurrentLogginedUser()
+	{
+		\RainLoop\Utils::ClearCookie('rlsession');
+		return false;
+	}
 }
diff --git a/rainloop/v/0.0.0/app/libraries/RainLoop/Config/AbstractConfig.php b/rainloop/v/0.0.0/app/libraries/RainLoop/Config/AbstractConfig.php
index 143aa231e..4f3f623c6 100644
--- a/rainloop/v/0.0.0/app/libraries/RainLoop/Config/AbstractConfig.php
+++ b/rainloop/v/0.0.0/app/libraries/RainLoop/Config/AbstractConfig.php
@@ -14,22 +14,30 @@ abstract class AbstractConfig
 	 */
 	private $aData;
 
+	/**
+	 * @var bool
+	 */
+	private $bUseApcCache;
+
 	/**
 	 * @var string
 	 */
-	protected $sFilePrefix;
+	private $sFileHeader;
 
 	/**
 	 * @param string $sFileName
-	 * @param string $sFilePrefix = ''
+	 * @param string $sFileHeader = ''
 	 *
 	 * @return void
 	 */
-	public function __construct($sFileName, $sFilePrefix = '')
+	public function __construct($sFileName, $sFileHeader = '')
 	{
 		$this->sFile = \APP_PRIVATE_DATA.'configs/'.$sFileName;
-		$this->sFilePrefix = $sFilePrefix;
+		$this->sFileHeader = $sFileHeader;
 		$this->aData = $this->defaultValues();
+
+		$this->bUseApcCache = APP_USE_APC_CACHE &&
+			\MailSo\Base\Utils::FunctionExistsAndEnabled(array('apc_fetch', 'apc_store'));
 	}
 
 	/**
@@ -42,7 +50,7 @@ abstract class AbstractConfig
 	 */
 	public function IsInited()
 	{
-		return is_array($this->aData) && 0 < count($this->aData);
+		return \is_array($this->aData) && 0 < \count($this->aData);
 	}
 
 	/**
@@ -73,7 +81,7 @@ abstract class AbstractConfig
 	{
 		if (isset($this->aData[$sSectionKey][$sParamKey][0]))
 		{
-			$sType = gettype($this->aData[$sSectionKey][$sParamKey][0]);
+			$sType = \gettype($this->aData[$sSectionKey][$sParamKey][0]);
 			switch ($sType)
 			{
 				default:
@@ -96,6 +104,82 @@ abstract class AbstractConfig
 		}
 	}
 
+	/**
+	 * @return string
+	 */
+	private function cacheKey()
+	{
+		return 'config:'.\sha1($this->sFile).':';
+	}
+
+	/**
+	 * @return bool
+	 */
+	private function loadDataFromCache()
+	{
+		if ($this->bUseApcCache)
+		{
+			$iMTime = @\filemtime($this->sFile);
+			if (\is_int($iMTime) && 0 < $iMTime)
+			{
+				$sKey = $this->cacheKey();
+
+				$iTime = \apc_fetch($sKey.'time');
+				if ($iTime && $iMTime === (int) $iTime)
+				{
+					$aFetchData = \apc_fetch($sKey.'data');
+					if (\is_array($aFetchData))
+					{
+						$this->aData = $aFetchData;
+						return true;
+					}
+				}
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * @return bool
+	 */
+	private function storeDataToCache()
+	{
+		if ($this->bUseApcCache)
+		{
+			$iMTime = @\filemtime($this->sFile);
+			if (\is_int($iMTime) && 0 < $iMTime)
+			{
+				$sKey = $this->cacheKey();
+				
+				\apc_store($sKey.'time', $iMTime);
+				\apc_store($sKey.'data', $this->aData);
+
+				return true;
+			}
+		}
+
+		return false;
+	}
+	
+	/**
+	 * @return bool
+	 */
+	private function clearCache()
+	{
+		if ($this->bUseApcCache)
+		{
+			$sKey = $this->cacheKey();
+
+			\apc_delete($sKey.'time');
+			\apc_delete($sKey.'data');
+
+			return true;
+		}
+
+		return false;
+	}
+
 	/**
 	 * @return bool
 	 */
@@ -103,6 +187,11 @@ abstract class AbstractConfig
 	{
 		if (\file_exists($this->sFile) && \is_readable($this->sFile))
 		{
+			if ($this->loadDataFromCache())
+			{
+				return true;
+			}
+
 			$aData = @\parse_ini_file($this->sFile, true);
 			if (\is_array($aData) && 0 < count($aData))
 			{
@@ -117,6 +206,8 @@ abstract class AbstractConfig
 					}
 				}
 
+				$this->storeDataToCache();
+
 				return true;
 			}
 		}
@@ -191,8 +282,9 @@ abstract class AbstractConfig
 			}
 		}
 
+		$this->clearCache();
 		return false !== \file_put_contents($this->sFile,
-			(0 < \strlen($this->sFilePrefix) ? $this->sFilePrefix : '').
+			(0 < \strlen($this->sFileHeader) ? $this->sFileHeader : '').
 			$sNewLine.\implode($sNewLine, $aResultLines));
 	}
 }
diff --git a/rainloop/v/0.0.0/index.php b/rainloop/v/0.0.0/index.php
index 3591fc90c..4612b95a0 100644
--- a/rainloop/v/0.0.0/index.php
+++ b/rainloop/v/0.0.0/index.php
@@ -24,6 +24,8 @@ Options -Indexes
 			define('APP_REQUEST_RND', md5(APP_START.rand(10000, 99999).APP_START));
 			define('APP_VERSION_ROOT_PATH', APP_INDEX_ROOT_PATH.'rainloop/v/'.APP_VERSION.'/');
 
+			define('APP_USE_APC_CACHE', true);
+
 			$sCustomDataPath = '';
 			if (file_exists(APP_INDEX_ROOT_PATH.'include.php'))
 			{