In some mail from Tracy R. Reed, sie said:
> The result of our testing is that we can crash (with core dump) or hang
> (infinite loop) over 40% (in the worst case) of the basic programs and
> over 25% of the X-Window applications. We were not able to crash any of
> the network services that we tested nor any of X-Window servers. This
> study parallels our 1990 study (that tested only the basic UNIX
> utilities); all systems that we compared between 1990 and 1995 noticeably
> improved in reliability, but still had significant rates of failure. The
> reliability of the basic utilities from GNU and Linux were noticeably
> better than those of the commercial systems.
It should mention that a lot of Linux programs have GNU heritage which
is also unavailable to commercial vendors.