No, it means something may have changed in between the time the developers wrote the code and when he tried to run it. Or perhaps there's something interesting

No, it means something may have changed in between the time the developers wrote the code and when he tried to run it. Or perhaps there's something interesting in his environment (e.g. a different file system than the installer supports). But since Greg didn't bother burdening anyone with details, we'll never know. The link I posted is a perfect example of this - it's for the supervise utility from djb's daemontools. djb is one of sharpest programmers out there but I doubt he considered that years after he wrote daemontools someone might want to run it on a platform where poll behaves as it does.