diff --git app/code/core/Mage/Cms/Helper/Wysiwyg/Images.php app/code/core/Mage/Cms/Helper/Wysiwyg/Images.php
index b106d09..0b6af65 100644
--- app/code/core/Mage/Cms/Helper/Wysiwyg/Images.php
+++ app/code/core/Mage/Cms/Helper/Wysiwyg/Images.php
@@ -49,6 +49,12 @@ class Mage_Cms_Helper_Wysiwyg_Images extends Mage_Core_Helper_Abstract
      */
     protected $_storeId = null;
 
+    /**
+     * Images Storage root directory
+     * @var
+     */
+    protected $_storageRoot;
+
 
     /**
      * Set a specified store ID value
@@ -68,8 +74,13 @@ class Mage_Cms_Helper_Wysiwyg_Images extends Mage_Core_Helper_Abstract
      */
     public function getStorageRoot()
     {
-        return Mage::getConfig()->getOptions()->getMediaDir() . DS . Mage_Cms_Model_Wysiwyg_Config::IMAGE_DIRECTORY
-            . DS;
+        if (!$this->_storageRoot) {
+            $this->_storageRoot = realpath(
+                Mage::getConfig()->getOptions()->getMediaDir()
+                . DS . Mage_Cms_Model_Wysiwyg_Config::IMAGE_DIRECTORY
+            ) . DS;
+        }
+        return $this->_storageRoot;
     }
 
     /**
@@ -197,7 +208,7 @@ class Mage_Cms_Helper_Wysiwyg_Images extends Mage_Core_Helper_Abstract
     public function getCurrentPath()
     {
         if (!$this->_currentPath) {
-            $currentPath = realpath($this->getStorageRoot());
+            $currentPath = $this->getStorageRoot();
             $node = $this->_getRequest()->getParam($this->getTreeNodeName());
             if ($node) {
                 $path = realpath($this->convertIdToPath($node));
@@ -223,7 +234,7 @@ class Mage_Cms_Helper_Wysiwyg_Images extends Mage_Core_Helper_Abstract
     public function getCurrentUrl()
     {
         if (!$this->_currentUrl) {
-            $path = str_replace(Mage::getConfig()->getOptions()->getMediaDir(), '', $this->getCurrentPath());
+            $path = str_replace(realpath(Mage::getConfig()->getOptions()->getMediaDir()), '', $this->getCurrentPath());
             $path = trim($path, DS);
             $this->_currentUrl = Mage::app()->getStore($this->_storeId)->getBaseUrl('media') .
                                  $this->convertPathToUrl($path) . '/';
diff --git app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php
index 19b3f45..af58ce3 100644
--- app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php
+++ app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php
@@ -89,7 +89,7 @@ class Mage_Cms_Model_Wysiwyg_Images_Storage extends Varien_Object
         foreach ($collection as $key => $value) {
             $rootChildParts = explode(DIRECTORY_SEPARATOR, substr($value->getFilename(), $storageRootLength));
 
-            if (array_key_exists($rootChildParts[0], $conditions['plain'])
+            if (array_key_exists(end($rootChildParts), $conditions['plain'])
                 || ($regExp && preg_match($regExp, $value->getFilename()))) {
                 $collection->removeItemByKey($key);
             }