diff --git a/configure.in b/configure.in
index 66528278c83d..bec544ae8e39 100644
--- a/configure.in
+++ b/configure.in
@@ -3815,13 +3815,16 @@ AC_ARG_ENABLE(verbose-config-defs,
 	VERBOSE_CONFIG_DEFS=
     fi])
 
-dnl New cache is not yet enabled by default.  This is a temporary
-dnl option for testing
-MOZ_ARG_ENABLE_BOOL(new-cache,
-[  --enable-new-cache      Enable new cache],
-  MOZ_NEW_CACHE=1
-  AC_DEFINE(MOZ_NEW_CACHE))
-
+dnl New cache is now enabled by default.
+MOZ_NEW_CACHE=1
+dnl The new cache may be optionally disabled in favor of the old cache
+dnl for performance testing.
+MOZ_ARG_DISABLE_BOOL(new-cache,
+[  --disable-new-cache     Disable new cache],
+   MOZ_NEW_CACHE=0)
+if test "$MOZ_NEW_CACHE" = "1"; then
+  AC_DEFINE(MOZ_NEW_CACHE)
+fi
 AC_SUBST(MOZ_NEW_CACHE)
 
 dnl New image library is not yet enabled by default.  This is a temporary
diff --git a/netwerk/protocol/http/src/nsHTTPChannel.cpp b/netwerk/protocol/http/src/nsHTTPChannel.cpp
index b0fe8ea72677..0ceb5e7667ee 100644
--- a/netwerk/protocol/http/src/nsHTTPChannel.cpp
+++ b/netwerk/protocol/http/src/nsHTTPChannel.cpp
@@ -1387,8 +1387,17 @@ nsHTTPChannel::CacheReceivedResponse(nsIStreamListener *aListener,
     // Store secure data in memory only
     nsCOMPtr<nsISupports> securityInfo;
     rv = GetSecurityInfo(getter_AddRefs(securityInfo));
-    if (NS_SUCCEEDED(rv) && securityInfo)
-        mCacheEntry->SetSecurityInfo(securityInfo);
+    if (NS_SUCCEEDED(rv) && securityInfo) {
+        rv = mCacheEntry->SetSecurityInfo(securityInfo);
+        if (NS_FAILED(rv)) return rv;
+    }
+
+    // For HTTPS connections, the storage policy will already be IN_MEMORY.
+    // We are concerned instead about load attributes which may have changed.
+    if (mLoadAttributes & nsIChannel::INHIBIT_PERSISTENT_CACHING) {
+        rv = mCacheEntry->SetStoragePolicy(nsICache::STORE_IN_MEMORY);
+        if (NS_FAILED(rv)) return rv;
+    }
 
     // Set the expiration time for this cache entry
     rv = UpdateExpirationTime();
@@ -2414,6 +2423,10 @@ nsresult nsHTTPChannel::ResponseCompleted(nsIStreamListener *aListener,
                  "OnStopRequest to consumer failed! Status:%x\n", this, rv));
     }
 
+#ifdef MOZ_NEW_CACHE
+    mResponseDataListener = 0;
+#endif
+
     // Release the cache entry as soon as we are done. This helps as it can
     // flush any cache records and do maintenance. But do this only after
     // stopRequest has been fired as the stopListeners could want to use
@@ -2438,7 +2451,9 @@ nsresult nsHTTPChannel::ResponseCompleted(nsIStreamListener *aListener,
     // it needs to be valid for the life of the channel
     //  mResponseContext = 0;
 
+#ifndef MOZ_NEW_CACHE
     mResponseDataListener = 0;
+#endif
     NS_IF_RELEASE(mCachedResponse);
 
     return rv;