--- a/.emacs-my	Sun Jan 27 23:27:12 2013 +0200
+++ b/.emacs-my	Sun Jan 27 23:34:57 2013 +0200
@@ -2318,10 +2318,8 @@
 (defun my-python-add-to-path (path)
   (interactive (list (read-directory-name "Enter new path for PYTHONPATH: ")))
   (when (featurep 'cygwin-mount)
-    (setq path (my-dos2cygwin-path path))
-    )
-  (python-send-string (format "import sys; sys.path.append(\"%s\")" path))
-  )
+    (setq path (my-dos2cygwin-path path)))
+  (python-send-string (format "import sys; sys.path.append(\"%s\")" (expand-file-name path))) )
 
 (defun my-python-django-fix (path)
   "XXX not work on Cygwin + naive Emacs."