Hi, Thanks for taking the time to report this bug.
It was originally reported against evince but I've changed that as you
don't describe anything wrong with Evince.
A good first try is to turn off Compiz. System -> Preferences ->
Appearance | Effects I think
** Package changed: evince (Ubuntu)
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https://bugs.launchpad.net/bugs/827080
Title:
System Freeze Every Start-Up
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