Index: trunk/genshi/_speedups.c
===================================================================
--- trunk/genshi/_speedups.c	(revision 780)
+++ trunk/genshi/_speedups.c	(working copy)
@@ -87,6 +87,7 @@
 
     out = (PyUnicodeObject*) PyUnicode_FromUnicode(NULL, len);
     if (out == NULL) {
+        Py_DECREF((PyObject *) in);
         return NULL;
     }
 
@@ -130,6 +131,8 @@
         inp++;
     }
 
+    Py_DECREF((PyObject *) in);
+
     args = PyTuple_New(1);
     if (args == NULL) {
         Py_DECREF((PyObject *) out);
@@ -303,11 +306,9 @@
             return NULL;
         tmp2 = PyUnicode_Concat(tmp, other);
     }
-    if (tmp2 == NULL) {
-        Py_DECREF(tmp);
+    Py_DECREF(tmp);
+    if (tmp2 == NULL)
         return NULL;
-    }
-    Py_DECREF(tmp);
     args = PyTuple_New(1);
     if (args == NULL) {
         Py_DECREF(tmp2);
@@ -380,6 +381,7 @@
         if (unicode == NULL) return NULL;
         result = PyNumber_Multiply(unicode, self);
     }
+    Py_DECREF(unicode);
 
     if (result == NULL) return NULL;
     args = PyTuple_New(1);
@@ -402,9 +404,13 @@
     format = PyString_FromString("<Markup %r>");
     if (format == NULL) return NULL;
     result = PyObject_Unicode(self);
-    if (result == NULL) return NULL;
+    if (result == NULL) {
+        Py_DECREF(format);
+        return NULL;
+    }
     args = PyTuple_New(1);
     if (args == NULL) {
+        Py_DECREF(format);
         Py_DECREF(result);
         return NULL;
     }