Screen goes blank while running Snow Leopard

I installed Snow Leopard Yesturday and everything went fine, but today my MacBook Pro 13" (latest Model) screen has gone blank 3 times when working on it for no reason everything is still running just cannot see it. If I close the lid and get it to enter sleep mode then open it again the screen comes back on.
Has anyone else had this issue?

I'm another one with the problem.
My iMac seems to be waking up from sleep on its own as when I come back to use it, the fan is working, the screen is blank, and I can't do anything except shut down (by holding power button). Always happens when I'm away, so don't know when (or why) it is waking up. (I have Wake for network access unchecked under Energy Saver, to no avail.)
Upon starting back up, screen brightness is set to lowest setting, and I get the error message for inappropriate shut down (of course). Very frustrating as I don't want to corrupt anything by constantly having to force shut down. I had no problems before SL.
I too will try Expose. Hopefully Apple is listening!

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    This post seems to be a duplication
    10:47 PM      Tuesday; December 27, 2011
    Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
      iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
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    My iPod nano will go into the sleep mode while a song is playing a second after the screen goes blank; the song will stop and I will then have to press the sleep/awake button to pick up where the song left off.  How do I fix this?

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  • My screen goes blank after I see the white start up screen

    My screen goes blank after I see the white start up screen

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    When I am on a phone call and I double click the button to go to my home screen, then open another application (usually my calendar program, Calengoo), my screen goes blank and I am not able to return to either the app, the phone, or the home screen. If I am speaking to a person, if they hang up then I am back to the phone application. If I'm leaving a message, I am unable to return to the phone screen to end the call, and have to wait until the other phone hangs up. I'm also unable to switch back and forth to look at my calendar if I'm calling someone about scheduling. This has only started happening since the most recent iOs update. I run into situations similar to this about once per day during the work week, as I use my phone is this manner quite often. While not life altering it is quite frustrating. Can anyone here help me figure out a way to avoid this? If it helps, I have noticed a general downgrade in overall performance starting two system updates ago (apps opening more slowly, closing unexpectedly more often, etc.). I have an iPhone 3GS with the latest OS update.
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    I could be corrupted backup.
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  • Ok, tried message boards everywhere to try and figure this out before having to post a question. Have a 21.5" iMac running Snow Leopard 10.6.8.  After updates no wireless capability for ipad or laptop, imac connects fine but nothing else.No widgets work.

    Ok, tried message boards everywhere to try and figure this out before having to post a question. Have a 21.5" iMac running Snow Leopard 10.6.8.  After updates no wireless capability for ipad or laptop, imac connects fine but nothing else. No dashboard widgets work, Skype won't work. What goes?

    Your post is pretty lengthy and I have to admit I didn't read it all. Please try restarting in Safe Mode, if that doesn't work please do both a SMC and PRAM reset. These may take 2-3 attempts.
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    Shut down the computer.
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    Shut down the computer.
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