Index: connectors/http11/src/java/org/apache/coyote/http11/Http11Processor.java
===================================================================
--- connectors/http11/src/java/org/apache/coyote/http11/Http11Processor.java	(revision 959427)
+++ connectors/http11/src/java/org/apache/coyote/http11/Http11Processor.java	(revision 959428)
@@ -78,7 +78,13 @@
     protected static StringManager sm =
         StringManager.getManager(Constants.Package);
 
+    /*
+     * Tracks how many internal filters are in the filter library so they
+     * are skipped when looking for pluggable filters. 
+     */
+    private int pluggableFilterIndex = Integer.MAX_VALUE;
 
+
     // ----------------------------------------------------------- Constructors
 
 
@@ -1657,6 +1663,8 @@
         //inputBuffer.addFilter(new GzipInputFilter());
         outputBuffer.addFilter(new GzipOutputFilter());
 
+        pluggableFilterIndex = inputBuffer.filterLibrary.length;
+
     }
 
 
@@ -1675,7 +1683,7 @@
                 (inputFilters[Constants.CHUNKED_FILTER]);
             contentDelimitation = true;
         } else {
-            for (int i = 2; i < inputFilters.length; i++) {
+            for (int i = pluggableFilterIndex; i < inputFilters.length; i++) {
                 if (inputFilters[i].getEncodingName()
                     .toString().equals(encodingName)) {
                     inputBuffer.addActiveFilter(inputFilters[i]);
Index: connectors/http11/src/java/org/apache/coyote/http11/Http11AprProcessor.java
===================================================================
--- connectors/http11/src/java/org/apache/coyote/http11/Http11AprProcessor.java	(revision 959427)
+++ connectors/http11/src/java/org/apache/coyote/http11/Http11AprProcessor.java	(revision 959428)
@@ -77,7 +77,13 @@
     protected static StringManager sm =
         StringManager.getManager(Constants.Package);
 
+    /*
+     * Tracks how many internal filters are in the filter library so they
+     * are skipped when looking for pluggable filters. 
+     */
+    private int pluggableFilterIndex = Integer.MAX_VALUE;
 
+
     // ----------------------------------------------------------- Constructors
 
 
@@ -1699,6 +1705,8 @@
         //inputBuffer.addFilter(new GzipInputFilter());
         outputBuffer.addFilter(new GzipOutputFilter());
 
+        pluggableFilterIndex = inputBuffer.filterLibrary.length;
+
     }
 
 
@@ -1717,7 +1725,7 @@
                 (inputFilters[Constants.CHUNKED_FILTER]);
             contentDelimitation = true;
         } else {
-            for (int i = 2; i < inputFilters.length; i++) {
+            for (int i = pluggableFilterIndex; i < inputFilters.length; i++) {
                 if (inputFilters[i].getEncodingName()
                     .toString().equals(encodingName)) {
                     inputBuffer.addActiveFilter(inputFilters[i]);
Index: connectors/http11/src/java/org/apache/coyote/http11/filters/BufferedInputFilter.java
===================================================================
--- connectors/http11/src/java/org/apache/coyote/http11/filters/BufferedInputFilter.java	(revision 959427)
+++ connectors/http11/src/java/org/apache/coyote/http11/filters/BufferedInputFilter.java	(revision 959428)
@@ -102,10 +102,12 @@
     }
 
     public void recycle() {
-        if (buffered.getBuffer().length > 65536) {
-            buffered = null;
-        } else {
-            buffered.recycle();
+        if (buffered != null) {
+            if (buffered.getBuffer().length > 65536) {
+                buffered = null;
+            } else {
+                buffered.recycle();
+            }
         }
         tempRead.recycle();
         hasRead = false;