Same problem here. Running brand new maverick installation.
/var/log/Xorg.0.log:
[   452.160] (II) PM Event received: Capability Changed
[   452.160] I830PMEvent: Capability change
[   452.416] (II) intel(0): EDID vendor "LCD", prod id 21328
[   452.416] (II) intel(0): Printing DDC gathered Modelines:
[   452.416] (II) intel(0): Modeline "1024x768"x0.0   65.00  1024 1048 1184 
1344  768 771 777 806 -hsync -vsync (48.4 kHz)
in loop after closing/opening the laptop lid.

The computer starts responding very slowly, the mouse cursor freezes for
a quarter of second every 4 or 5 seconds... grey blocks appear randomly
on screen.

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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in ubuntu.
https://bugs.launchpad.net/bugs/595773

Title:
  Screen flicker and sometimes crash

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