Visual Glitches in Lion

I just bought a 27" iMac, and everything has been fine until a few days ago, when I started to notice some slight visual glitches. They don't show up everytime I use my computer either. I have updated all software on the computer, because I thought that may have been a quick fix. Has anyone had or know of these visual glitching problems? TIA.
My computer specs are

I have since discovered that my Energy Saver > Automatic Graphics Switching" was accidentally turned back ON.
I have now re-installed gfxCardStatus so that I can ALWAYS see the status of my "Integrated" vs. "Discrete" graphics on my menu bar at the top...and force it to stay "Dedicated" always to avoid graphics switching issues that may be related to rMBP system stability.
Also, after having instability issues with my Retina MBP while using AirDisplay, I had uninstalled that for several weeks. I reinstalled AirDisplay after upgrading to Mountain Lion last week.
So, in summary, the Graphics Switching and AirDisplay now represent two additional variables in my crash history.
Since Disabling (unchecking) "Automatic Graphics Switching" and uninstalling AirDisplay, I have had no Crashes.
I will post here again if I am able to narrow it down to one of those two as the cause of my crash problems.
As the two previous posts have indicated, it seems that Firefox was NOT the cause of my crash problems.
Most likely "Automatic Graphics Switching" and/or AirDisplay.
Thanks much.

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Attachments:
LabVIEWGlitch.jpg ‏179 KB

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I made a video to show more effectively what I mean.
http://www.youtube.com/watch?v=Jq7NxNrl24s
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This graphics card is one of those dual cards, the one that allows for better battery life or better graphic performance.
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I decided to call Apple Care, the first person (girl) was very helpful, she had me reset my PRAM, do a disk repair and even a full reinstall of Mountain Lion. She told me that if after the install, the problem still persisted, to call back (as she had given me 90 days of support for Mountain Lion). However, when I called back, because the issue still kept happening (surprise), I got a guy, who barely spoke english, which was the first time this has ever happened when I've called Apple. He was very rude and didn't really seem to fully understand what I was trying to explain to him, regardless of the fact that my entire case was on the computer in front of him. After explaining to him that I had one logic board fail over a year ago, that had since been replaced, my computer had been working fine, that is until I installed OS X 10.8. He said that is impossible as this is a hardware issue and Moutain Lion is software. After trying to explain to an "Apple" rep that the software in Mountain Lion contains drivers for "hardware" and that, that could be the issue, he refuted the possibility. I then pointed out that I've posted on the Apple support forums....want to know his reply, you'll love this.
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I just thought I'd share this issue with the CSR at Apple with you all, oh, he also said he has never heard of this issue. He said since ML has been released, he's been taking calls for days and I'm the first person that's reported this problem. After reading all of your responses, I can only assume he's lying. However, in case he isn't, if you haven't already, I highly recommend you call Apple at 800-APL-CARE and tell them of your issue so we can get this noticed by a few representatives. Seeing how I run my own tech new blog, believe me, I'll be spreading the word...just not with the same level of hostility as I am on these forums.
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http://imgur.com/a/9TlAV
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Visual Glitches in Lion

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