Flashing pixels below menu bar?

After I updated to Mavericks I noticed that a strip of pixels will randomly flash at times right under the menu bar. The line is maybe 1/4 of the screen in the center. If I go into mission control or launch pad it goes away for a while but comes back eventually. Does anyone know what would cause this? I have tried rebooting/updating to 9.1 and it still happens.

Hello there, TheNerdHerd.
The following Knowledge Base article provides some great information for troubleshooting your issue:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Particularly:
Pixel anomalies
If you have concerns about pixel anomalies, refer to these articles for more information:
About LCD display pixel anomalies for Apple products released in 2010 and later
About LCD display pixel anomalies for Apple products released before 2010
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

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"-NewCoder-" <[email protected]> wrote in
message
news:f0e1lp$mum$[email protected]..
>I have a spry menu bar with sub bars and below that menu
bar I have flash
> video. Well, the submenu content of menu bar is not
fully displayed, as
> flash
> content blocks it. Is it possible to order the flash
content (or menu bar)
> somehow i.e send to back, bring to front?
>

Spry menu bar does not appear over flash elements in I.E. 8

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@charset "UTF-8";
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ul.MenuBarActive
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MacBook Pro (15-inch, Mid 2012) (Verified)
MacBook Pro - model: MacBookPro9,1
1 2.3 GHz Intel Core i7 CPU: 4 cores
8 GB RAM
Video Information:
Intel HD Graphics 4000 - VRAM: (null)
Color LCD 1440 x 900
NVIDIA GeForce GT 650M - VRAM: 512 MB
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OS X 10.9.3 (13D65) - Uptime: 0 days 1:9:27
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APPLE HDD ST500LM012 disk0 : (500,11 GB)
EFI (disk0s1) <not mounted>: 209,7 MB
Macintosh HD (disk0s2) / [Startup]: 499,25 GB (323,02 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
MATSHITADVD-R   UJ-8A8
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Apple Computer, Inc. IR Receiver
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. FaceTime HD Camera (Built-in)
Logitech USB Optical Mouse
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Apple Inc. thunderbolt_bus
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Mac App Store and identified developers
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[loaded] com.adobe.fpsaud.plist Support
[not loaded] com.adobe.SwitchBoard.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
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[running] com.brother.LOGINserver.plist Support
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AirPlay: Version: 2.0 - SDK 10.9
AppleAVBAudio: Version: 203.2 - SDK 10.9
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npsf_uni: Version: sf 3.3.2.1 Support
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Jun 20 10:05:23 MacBook-Pro-de-Gustavo kernel[0] <Debug>: disk0s2: I/O error.
--- last message repeated 62 times ---
Jun 20 10:55:54 MacBook-Pro-de-Gustavo kernel[0] <Debug>: nspace-handler-set-snapshot-time: 1403272556
Jun 20 10:56:49 MacBook-Pro-de-Gustavo kernel[0] <Debug>: disk0s2: I/O error.
--- last message repeated 29 times ---
Jun 20 11:36:51 MacBook-Pro-de-Gustavo kernel[0] <Debug>: nspace-handler-set-snapshot-time: 1403275013
Jun 20 11:37:18 MacBook-Pro-de-Gustavo kernel[0] <Debug>: nspace-handler-unblock: did not find token 638
Jun 20 11:37:18 MacBook-Pro-de-Gustavo kernel[0] <Debug>: nspace-handler-unblock: did not find token 637
Jun 20 11:38:12 MacBook-Pro-de-Gustavo kernel[0] <Debug>: disk0s2: I/O error.
--- last message repeated 21 times ---

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