Not picking path after added to maya.env

maya.env is located at this location E:\Users\san\Documents\maya\2013 on my laptop, even after editing the maya.env to include pythonpath like this.

Maya.env
PYTHONPATH=E:\Users\san\Desktop

when i restart maya and run

import sys
for each in sys.path: print each

I do not get

E:\Users\san\Desktop listed, so is my maya reading a different maya.env file or what ? whats wrong or some other script could be causing the problem ?