I ran into the following problem on a new CM 3.3(2) install:
Symtom: When Admin adding new user from Add a New User page the follow error
The following error occurred while trying to load the requested page.
Sorry, your session object has timed out.
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This is documented in bug CSCdv62156.
Unfortunately the workaround provided did not work. I found that if I open the ccmadmin page using the ip address of the server instead of the name you do not run into this problem. http://<ip address>/ccmadmin
Hope this helps.