Initially, I was skeptical of all the reports about how frequently the issue was happening, and I was starting to believe that it was just hysterics by the anti-Apple crowd. But it was eventually just a matter of time.
First my personal laptop had issues, and I was thankfully able to take advantage of the free keyboard replacement. Then my work laptop began experiencing the same issue, and it's gotten so bad that I had to connect an external keyboard in order to be able to login because I have no way to see which characters are getting screwed up as I type my password.
I keep meaning to take it to the Apple store, but the latest estimates are 5 to 7 days to replace the keyboard and I haven't yet had the opportunity to be without my work machine for that long.