Mark Russinovich has a great article on his blog about Sony DRM and rootkit-style cloaking. He does a good job of navigating through the obfuscation that an idiotic DRM company foisted on Sony and on the world.
Mark concludes:
The entire experience was frustrating and irritating. Not only had Sony put software on my system that uses techniques commonly used by malware to mask its presence, the software is poorly written and provides no means for uninstall. Worse, most users that stumble across the cloaked files with a RKR scan will cripple their computer if they attempt the obvious step of deleting the cloaked files.
Wow. Reason #524 why I hate DRM. I know we gotta have it, but it just leads to crap like this. And worse. But that’s a topic for another day and other websites. At least with Apple, you know where you stand.
So, no more buying CDs from Sony. Too bad; they have some good stuff on their classical labels.