It is much easier to find out if say... Open Source Minix is stealing code than MS so no, I am not 100% sure but I am far more sure of that then the windows box I am on now.. Given the Minix Kernel is a slim 4000 lines even SCO should be able to find out in less than three years..
Since there are several excellent versions of bonafide US-born Unix available, such as Sun Solaris and Apple OSX, which are completely legal copies
And neither of which meet the slim hardware usage that Minix meets it will run on far less than Solaris or OSX. So if I want to run something on a small old p120 I have lying in the closet what am I to do?
But you're not liable for illegal use if you use software with a warranty, which many vendors such as Microsoft provide. No users have ever been liable for anything they have ever been accused of.
You could easily run a version of SCO Unix on your P120, they have of course been doing legal versions of Unix on Intel longer than anyone. But since that is a legal version, it may not be free, which seems to be a higher priority on many people's list than whether it is a legal version or not.
Shall I venture a guess as to which you prefer? Are you going to call Shadowace into confession for his insults?