--- wxPython-src-2.9.4.0/src/unix/threadpsx.cpp.orig	2013-04-18 02:08:21.999609705 +0200
+++ wxPython-src-2.9.4.0/src/unix/threadpsx.cpp		2013-04-18 02:10:15.696180346 +0200
@@ -1047,18 +1047,23 @@
 
 bool wxThread::SetConcurrency(size_t level)
 {
-#ifdef HAVE_THR_SETCONCURRENCY
+#ifdef HAVE_PTHREAD_SET_CONCURRENCY
+    int rc = pthread_setconcurrency( level );
+#elif defined(HAVE_THR_SETCONCURRENCY)
     int rc = thr_setconcurrency(level);
+#else // !HAVE_THR_SETCONCURRENCY
+    // ok only for the default value
+    int rc = level == 0 ? 0 : -1;
+#endif // HAVE_THR_SETCONCURRENCY/!HAVE_THR_SETCONCURRENCY
+
     if ( rc != 0 )
     {
-        wxLogSysError(rc, _T("thr_setconcurrency() failed"));
+        wxLogSysError(rc, _("Failed to set thread concurrency level to %lu"),
+                      static_cast<unsigned long>(level));
+        return false;
     }
 
-    return rc == 0;
-#else // !HAVE_THR_SETCONCURRENCY
-    // ok only for the default value
-    return level == 0;
-#endif // HAVE_THR_SETCONCURRENCY/!HAVE_THR_SETCONCURRENCY
+    return true;
 }
 
 // -----------------------------------------------------------------------------