Oh God.. I got as far as reading SAS statistical software. I briefly got my hands dirty with that a little over ten years ago and remember thinking at the time how it was the ugliest most bug ridden heap of shit I'd ever had the misfortune of using.

Fortunately my time using it was on the order of a week or so.. it doesn't at all surprise me that the bug described was only (recently?) discovered.

The vendor of that product (I can't remember who that is) clearly had a serious quality control problem ten or so years ago -- purely going on SAS -- and it sounds like they still do...