Not only does this particular Sony copy protection program fit completely in the definition of spyware and malicious software, which is illegal in most countries and could get you locked up. It also has active program (eats some 2% of CPU resources all the time, or so im told), that hides all filenames beginning with $sys$ from inspection, providing ready platform for some virus to take advantage of.
The comment portion of the page is the most informative. If this would hit headline news, there could be some serious trouble coming for Sony as their EULA is not properly refitted to refuse liability of problems caused by this software. This virus was ironically developed by branch of Symantec corporation. All the money, yet they fail to do this kind of silly thing right.