--- /usr/share/pycentral-data/pyversions.py~	2007-11-08 14:06:55.000000000 +0100
+++ /usr/share/pycentral-data/pyversions.py	2007-11-08 14:29:11.000000000 +0100
@@ -123,12 +123,15 @@
 def default_version(version_only=False):
     global _default_version
     if not _default_version:
-        _default_version = link = os.readlink('/usr/bin/python')
-    # consistency check
-    debian_default = read_default('default-version')
-    if not _default_version in (debian_default, os.path.join('/usr/bin', debian_default)):
-        raise ValueError, "the symlink /usr/bin/python does not point to the python default version. It must be reset to point to %s" % debian_default
-    _default_version = debian_default
+        try:
+            _default_version = link = os.readlink('/usr/bin/python')
+        except OSError:
+            _default_version = None
+        # consistency check
+        debian_default = read_default('default-version')
+        if _default_version and not _default_version in (debian_default, os.path.join('/usr/bin', debian_default)):
+            raise ValueError, "the symlink /usr/bin/python does not point to the python default version. It must be reset to point to %s" % debian_default
+        _default_version = debian_default
     if version_only:
         return _default_version[6:]
     else: