Re: El Reg sat down with....? Wow!
Oddly enough it tended to be Word that had that problem when the lock-in train was running full-tilt.
I have never had a problem opening a Word document with Word. I did have a problem once with a Word document created in Star Office.* When Star Office (and Word) failed to open the document I was told that I should have been periodically doing a File, Save as... That's something I never needed to do with Word though I never used the DOS versions or Word for Windows 1.0.
I have seen this problem however. It was always when the Fast Saves setting had been enabled and so could be considered self-inflicted.
* Star Office was the predecessor of Open/Libre Office and was a paid-for commercial product.