OS X Lion freezes at login screen + App Store is slow

I installed OS X Lion in my Mac Book Pro (Mid 2010) and have two issues:


- Login screen freezes sometimes. "Colored rotating disc" appears, text cursor stops blinking and I can not do anything; I can not click anywere, I can not enter my user name/password... Only option is to hard-reboot the computer, which is not a pleasant thing to do.


- App Store is very slow. It takes about 30 seconds of "rotating colored disc thinking" every time a page has to be loaded!


I first installed OS X Lion via Mac App Store and login screen freezes happened about 50% or more of the times I turned on the computer! Also random freezes happened during computer work. Computer was almost unusable under these circumstances, so I reinstalled OS X Lion by doing a clean install (from DVD). After this clean install everithing seemed to run smoothly at first, but now login screen freezes happen again and Mac App Store is very slow as I explained.


I did not have any of these problems with Snow Leopard. I have checked permissions, and I have not installed too many apps yet.


Anybody with these same issues? Any idea of a solution? Somebody at Apple working to solve these problems?


Thanks!

MacBook Pro, Mac OS X (10.7)

Posted on Jul 25, 2011 3:47 AM

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1,019 replies

Jul 26, 2011 1:06 PM in response to maharajan

I was told to try disabling Automatic graphics switching, and that would stop the freezing at the login screen. I haven't tested it yet. On laptops this will always use the better graphics card though, so battery life will decrease (by how much I don't know)


System Preferences > Energy Saver > (uncheck) Automatic Graphics Switching (it's at the top of the settings pane)


I'll post my results after testing a few reboots when I get home.

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OS X Lion freezes at login screen + App Store is slow

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