diff -r 4a5782a2b074 Lib/subprocess.py
--- a/Lib/subprocess.py	Sun Mar 20 19:59:25 2011 +0100
+++ b/Lib/subprocess.py	Sun Mar 20 13:43:14 2011 -0700
@@ -1070,7 +1070,7 @@
             if timeout is None:
                 timeout = _subprocess.INFINITE
             else:
-                timeout = int(timeout * 1000)
+                timeout = int(timeout)
             if self.returncode is None:
                 result = _subprocess.WaitForSingleObject(self._handle, timeout)
                 if result == _subprocess.WAIT_TIMEOUT: