Hi, For the past 2 years or so, I've constantly had an update notification in the Mac App Store application for an application that I do not have, or have ever installed, on my machine nor have ever purchased under my Apple ID. The application is called "Nyan Cat: Lost in Space" When I try to click the 'Update' button, in the hope it'll just disappear, I get these two messages: I've been searching around on Google and have tried re-indexing Spotlight but the Nyan Cat app keeps re-appearing after some time. It's just something thats been bothering me every time I see it for the last couple of years but I can never get rid of that pesky cat with rainbows coming out of it's rear-end every time I try to. Would appreciate it if anyone can help me exterminate that not-so-innocent cat. Thanks!