Lightroom corrupting RAW files? Hardware issue?

I've started having some issues with RAW files being corrupted when I open them in Lightroom. I've done a lot to troubleshoot and narrow down the symptoms, and here is what I can tell you. If anyone has any ideas for how to solve this, I'd really appreciate it!
Equipment
Canon 7D, 1 32GB CF card, 1 4GB CF card
Lenovo Laptop, Win 8; Lightroom 4
Dell PC, Win7, Lightroom 5
Here's what the corruption looks like in my Library view. Note that all of the photos are the same. I just rapid-fired a bunch of shots down the hallway to test this out.
I first noticed the corruption on the PC, pulling photos from the 32GB card. I bought a new hard drive (SSD hybrid), installed a clean version of Windows 7, and upgraded to Lightroom 5, then the 5.3 update. I re-downloaded some photos from the 32GB card, and they still show up corrupted. So here is my further testing:
I shot a series of photos like shown above on the 32GB card, downloaded them on the laptop with a new USB cable. The photos look good.
I shot a series of photos on the 4GB card, downloaded them to the laptop with the same cord, they look good.
I imported the same photos photos from the 4GB card and from the 32GB card on the PC with my existing Lighrtoom Catalog and they are corrupted.
I created a new Lightroom Catalog on the PC and downloaded the same photos from the 4GB card and from the 32GB card on the PC and they are corrupted.
So what gives? I think we can rule out corruption or issues on the hard drive, the OS, the USB cable, and both of the CF cards. It baffles me that a new HD, clean OS install, new catalog, new USB cable, and upgraded Lightroom haven't solved the problem. Is it possible that there is some other part of the hardware on my PC which is corrupting the files?
I'd love some insight if folks have any ideas!
Thanks,
Adam

Was this ever figured out AdamCohn? I have a very similar issue. I have actually watched two photos over the last two days become corrupt while viewing them in Lightroom. I am not suggesting LR is the cause (as I know this is almost always hardware related) but it has happened right in front of my eyes while LR is interacting with the images (I believe).
Scenario:
Images were
* Imported into LR on different days (about a week apart)
* Imported to different hard drives during import (one an SSD, another to a typical HDD)
* Behaving normally in LR until corruption (i.e. previews were built without issue, was able to develop and export images. Showed fine in Finder).
After viewing the images in Loupe view and watching them flip instantly to a visual mis-mash similar to what you showed the images were permanently screwed. The appear the same way in Finder and in Photoshop
I have not noticed any other issues in any other app or area of the system. Everying seems to be running smoothly.
Troubleshooting:
* Memory tests:
- Built-in Apple memory test (normal + extended).
- MemTest (as described here: MemTest for Mac OS X Tests your RAM). Ran it twice, all tests passed.
* I am running some HDD checks now, but with the two images being on two different drives I suspect the likelihood of this being a drive issue is extremely small.
Suggestions?

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