diff --git a/flying-saucer-core/src/main/java/org/xhtmlrenderer/swing/NaiveUserAgent.java b/flying-saucer-core/src/main/java/org/xhtmlrenderer/swing/NaiveUserAgent.java
index 14536b692..8fb6ca1af 100644
--- a/flying-saucer-core/src/main/java/org/xhtmlrenderer/swing/NaiveUserAgent.java
+++ b/flying-saucer-core/src/main/java/org/xhtmlrenderer/swing/NaiveUserAgent.java
@@ -234,11 +234,12 @@ public ImageResource getImageResource(String uri) {
             BufferedImage image = ImageUtil.loadEmbeddedBase64Image(uri);
             ir = createImageResource(null, image);
         } else {
-            uri = resolveURI(uri);
-            ir = (ImageResource) _imageCache.get(uri);
+        	String unresolvedUri = uri;
+            ir = (ImageResource) _imageCache.get(unresolvedUri);
             //TODO: check that cached image is still valid
             if (ir == null) {
-                InputStream is = resolveAndOpenStream(uri);
+                uri = resolveURI(uri);
+            	InputStream is = resolveAndOpenStream(uri);
                 if (is != null) {
                     try {
                         BufferedImage img = ImageIO.read(is);
@@ -246,7 +247,7 @@ public ImageResource getImageResource(String uri) {
                             throw new IOException("ImageIO.read() returned null");
                         }
                         ir = createImageResource(uri, img);
-                        _imageCache.put(uri, ir);
+                        _imageCache.put(unresolvedUri, ir);
                     } catch (FileNotFoundException e) {
                         XRLog.exception("Can't read image file; image at URI '" + uri + "' not found");
                     } catch (IOException e) {
diff --git a/flying-saucer-core/src/main/java/org/xhtmlrenderer/util/Configuration.java b/flying-saucer-core/src/main/java/org/xhtmlrenderer/util/Configuration.java
index bd3c3c06b..c5f172d78 100644
--- a/flying-saucer-core/src/main/java/org/xhtmlrenderer/util/Configuration.java
+++ b/flying-saucer-core/src/main/java/org/xhtmlrenderer/util/Configuration.java
@@ -85,7 +85,7 @@ public class Configuration {
     /**
      * The Singleton instance of the class.
      */
-    private static Configuration sInstance;
+    private static Configuration sInstance = new Configuration();
 
     /**
      * List of LogRecords for messages from Configuration startup; used to hold these
@@ -762,10 +762,7 @@ public static boolean isFalse(String key, boolean defaultVal) {
     /**
      * @return The singleton instance of the class.
      */
-    private static synchronized Configuration instance() {
-        if (Configuration.sInstance == null) {
-            Configuration.sInstance = new Configuration();
-        }
+    private static Configuration instance() {
         return Configuration.sInstance;
     }// end main()
 
diff --git a/flying-saucer-pdf/src/main/java/org/xhtmlrenderer/pdf/ITextUserAgent.java b/flying-saucer-pdf/src/main/java/org/xhtmlrenderer/pdf/ITextUserAgent.java
index 8da54c5fd..5ace0038d 100644
--- a/flying-saucer-pdf/src/main/java/org/xhtmlrenderer/pdf/ITextUserAgent.java
+++ b/flying-saucer-pdf/src/main/java/org/xhtmlrenderer/pdf/ITextUserAgent.java
@@ -38,6 +38,8 @@
 import com.lowagie.text.Rectangle;
 import com.lowagie.text.pdf.PdfReader;
 
+import org.xhtmlrenderer.util.ImageUtil;
+
 public class ITextUserAgent extends NaiveUserAgent {
     private static final int IMAGE_CACHE_CAPACITY = 32;
 
@@ -62,16 +64,17 @@ private byte[] readStream(InputStream is) throws IOException {
     }
 
     public ImageResource getImageResource(String uriStr) {
+        String unresolvedUri = uriStr;
         ImageResource resource;
         if (!ImageUtil.isEmbeddedBase64Image(uriStr)) {
             uriStr = resolveURI(uriStr);
         }
-        resource = (ImageResource) _imageCache.get(uriStr);
+        resource = (ImageResource) _imageCache.get(unresolvedUri);
 
         if (resource == null) {
             if (ImageUtil.isEmbeddedBase64Image(uriStr)) {
                 resource = loadEmbeddedBase64ImageResource(uriStr);
-                _imageCache.put(uriStr, resource);
+                _imageCache.put(unresolvedUri, resource);
             } else {
                 InputStream is = resolveAndOpenStream(uriStr);
                 if (is != null) {
@@ -91,7 +94,7 @@ public ImageResource getImageResource(String uriStr) {
                             scaleToOutputResolution(image);
                             resource = new ImageResource(uriStr, new ITextFSImage(image));
                         }
-                        _imageCache.put(uriStr, resource);
+                        _imageCache.put(unresolvedUri, resource);
                     } catch (Exception e) {
                         XRLog.exception("Can't read image file; unexpected problem for URI '" + uriStr + "'", e);
                     } finally {