Canon Raw (CR2) files seem to get corrupted after some times

Hello
I use a fully registered Lightroom 5.3 with my Canon 5D Mark III, and I have this kind of corruption on some of my CR2 files from times to times. If i reimport the .cr2 file in another catalog or even on another the resulting file is still corrupted.
The wierdest thing is that the original import was successful and I successfully exported it several times correctly. The corruption should have happens afterward:
Do you have any idea where does this comes from? This is absolutely inacceptable from a professional software.
PS: I had this kind of curruption with an old version of Lightroom with my previous pentax K7d, but I though this was past
Thanks you very much

Gaetan St wrote:
Do you have any idea where does this comes from?
Yes, -failing hardware (typically disk or ram).
Gaetan St wrote:
This is absolutely inacceptable from a professional software.
The software is not corrupting them, it's just revealing existing corruption. (yeah, I know some apps can still display the jpeg preview without revealing the corruption, still... - Lr is a raw editor..).
~R.

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