Index: t3lib/class.t3lib_iconworks.php
===================================================================
--- t3lib/class.t3lib_iconworks.php	(revision 5779)
+++ t3lib/class.t3lib_iconworks.php	(working copy)
@@ -279,10 +279,15 @@
 	 * @see skinImgFile()
 	 */
 	public static function skinImg($backPath, $src, $wHattribs = '', $outputMode = 0)	{
+		static $cachedSkinImages = array();
+
+		$imageId = md5($backPath . $src . $wHattribs . $outputMode);
 
+		if (isset($cachedSkinImages[$imageId])) {
+			return $cachedSkinImages[$imageId];
+		} else {
 			// Setting source key. If the icon is refered to inside an extension, we homogenize the prefix to "ext/":
 		$srcKey = preg_replace('/^(\.\.\/typo3conf\/ext|sysext|ext)\//', 'ext/', $src);
-#if ($src!=$srcKey)debug(array($src, $srcKey));
 
 			// LOOKING for alternative icons:
 		if ($GLOBALS['TBE_STYLES']['skinImg'][$srcKey])	{	// Slower or faster with is_array()? Could be used.
@@ -340,7 +345,11 @@
 				$output = $wHattribs;
 			break;
 		}
+
+		$cachedSkinImages[$imageId] = $output;
 		return $output;
+
+	}
 	}