Organize Desktop by Name sometimes doesn't retain order after a restart

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http://askubuntu.com – I searched askubuntu.com for "desktop icons". I found the following unanswered questions and hence this question maybe a duplicate (but with pictures): How to align my icons in my desktop?, Desktop icons getting realigned and overlapped and Desktop icons get jumbled up after shutdown. They seem related to what I see not so rarely using Ubuntu 11.10 and Unity 3D on a Dell Inspiron 1545 laptop. Before shutting off my laptop, I right-clicked on the Desktop and chose Organize Desktop by Name. I then took a screen shot. After restarting, I took a screen shot again and marked the overlapping icons. (HowTos)