diff --git a/src/bitcoinrpc.cpp b/src/bitcoinrpc.cpp
index 9c9ff255d72..7cee3561796 100644
--- a/src/bitcoinrpc.cpp
+++ b/src/bitcoinrpc.cpp
@@ -1589,7 +1589,7 @@ Value encryptwallet(const Array& params, bool fHelp)
     // slack space in .dat files; that is bad if the old data is
     // unencrypted private keys.  So:
     StartShutdown();
-    return "wallet encrypted; bitcoin server stopping, restart to run with encrypted wallet";
+    return "wallet encrypted; bitcoin server stopping, restart to run with encrypted wallet.  The keypool has been flushed, you need to make a new backup.";
 }
 
 
diff --git a/src/init.cpp b/src/init.cpp
index b3c49f3a63a..0c20be976a6 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -259,7 +259,7 @@ bool AppInit2(int argc, char* argv[])
         // On Windows, show a message box, as there is no stderr
         wxMessageBox(strUsage, "Usage");
 #else
-        fprintf(stderr, "%s", strUsage.c_str());
+        fprintf(stdout, "%s", strUsage.c_str());
 #endif
         return false;
     }
diff --git a/src/util.cpp b/src/util.cpp
index d496a44d2d4..61257e667e8 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -194,8 +194,14 @@ inline int OutputDebugStringF(const char* pszFormat, ...)
         if (fileout)
         {
             static bool fStartedNewLine = true;
-            static boost::mutex mutexDebugLog;
-            boost::mutex::scoped_lock scoped_lock(mutexDebugLog);
+
+            // This routine may be called by global destructors during shutdown.
+            // Since the order of destruction of static/global objects is undefined,
+            // allocate mutexDebugLog on the heap the first time this routine
+            // is called to avoid crashes during shutdown.
+            static boost::mutex* mutexDebugLog = NULL;
+            if (mutexDebugLog == NULL) mutexDebugLog = new boost::mutex();
+            boost::mutex::scoped_lock scoped_lock(*mutexDebugLog);
 
             // Debug print useful for profiling
             if (fLogTimestamps && fStartedNewLine)