--- src/org/python/core/PySystemState.java.orig	2014-05-28 11:09:26.758604716 +0100

+++ src/org/python/core/PySystemState.java	2014-05-28 11:16:59.136279132 +0100

@@ -960,7 +960,11 @@

         }

         cachedir = new File(props.getProperty(PYTHON_CACHEDIR, CACHEDIR_DEFAULT_NAME));

         if (!cachedir.isAbsolute()) {

-            cachedir = new File(prefix == null ? null : prefix.toString(), cachedir.getPath());

+            File jythondir = new File(System.getProperty("user.home"), ".jython-cache");

+            if (!jythondir.isDirectory()) {

+                jythondir.mkdirs();

+            }

+            cachedir = new File(jythondir, cachedir.getPath());

         }

     }