Grooveshark has removed every file that Universal requested them to remove through the appropriate channels. If they didn't they would've been shut down a long time ago. Grooveshark is completely safe in assuming that any remaining Universal content posted on their site is approved by Universal.
The New York court mentioned in the article these comments are attached to.
The MegaUpload case is entirely different. It is a federal criminal indictment and none of the allegations have yet been proven in court. Grooveshark has not been charged with anything of the sort. However, given that Hollywood has circulated a "hit list" of businesses they want to kill around Washington (one of which was MU, incidentally), I would not be overly surprised if it comes to that eventually.
