diff --git a/netwerk/protocol/http/nsHttpChannel.cpp b/netwerk/protocol/http/nsHttpChannel.cpp
index bf2230a3c743..047b64528d96 100644
--- a/netwerk/protocol/http/nsHttpChannel.cpp
+++ b/netwerk/protocol/http/nsHttpChannel.cpp
@@ -107,6 +107,7 @@ nsHttpChannel::nsHttpChannel()
     , mFallingBack(PR_FALSE)
     , mWaitingForRedirectCallback(PR_FALSE)
     , mRemoteChannel(PR_FALSE)
+    , mRequestTimeInitialized(PR_FALSE)
 {
     LOG(("Creating nsHttpChannel [this=%p]\n", this));
 }
@@ -520,6 +521,7 @@ nsHttpChannel::SetupTransaction()
 
     // set the request time for cache expiration calculations
     mRequestTime = NowInSeconds();
+    mRequestTimeInitialized = PR_TRUE;
 
     // if doing a reload, force end-to-end
     if (mLoadFlags & LOAD_BYPASS_CACHE) {
@@ -3708,8 +3710,10 @@ nsHttpChannel::OnStopRequest(nsIRequest *request, nsISupports *ctxt, nsresult st
     mStatus = status;
 
     // perform any final cache operations before we close the cache entry.
-    if (mCacheEntry && (mCacheAccess & nsICache::ACCESS_WRITE))
+    if (mCacheEntry && (mCacheAccess & nsICache::ACCESS_WRITE) &&
+        mRequestTimeInitialized){
         FinalizeCacheEntry();
+    }
     
     if (mListener) {
         LOG(("  calling OnStopRequest\n"));
diff --git a/netwerk/protocol/http/nsHttpChannel.h b/netwerk/protocol/http/nsHttpChannel.h
index fa69d6562831..e461ed0d6bf9 100644
--- a/netwerk/protocol/http/nsHttpChannel.h
+++ b/netwerk/protocol/http/nsHttpChannel.h
@@ -326,6 +326,9 @@ private:
     PRUint32                          mWaitingForRedirectCallback : 1;
     // True iff this channel is servicing a remote HttpChannelChild
     PRUint32                          mRemoteChannel : 1;
+    // True if mRequestTime has been set. In such a case it is safe to update
+    // the cache entry's expiration time. Otherwise, it is not(see bug 567360).
+    PRUint32                          mRequestTimeInitialized : 1;
 
     class nsContentEncodings : public nsIUTF8StringEnumerator
     {