Display locking up

[Jonathan Jesse]

Hello folks,

I asked this question (
http://askubuntu.com/questions/231932/display-locks-up-after-alt-tab-switching)
and am wondering if anyone else has ever noticed this?

One interesting thing is I am running the Project Neon PPA and have a
separate user setup to login to the different version.  When I'm logged in
to this user I have never experienced a lockup switching between windows
while on this PPA.

Is there something I can gather log wise to help troubleshoot this
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