I got up this morning and found a big dialog box open about "Mac Ads Cleaner" that had been installed on my system without my knowledge or approval. Has anybody else seen this?? I googled for it and couldn't find anything about it, other than a site selling it. No idea at all how it got there. I quit it, removed it from Login Items, and deleted the app out of the Applications folder -- which appears to have appeared there yesterday morning around 5:34 AM. I also went into Library and deleted a folder out of there with the same name. Then emptied the trash. When I emptied the trash, another pop-up box appeared "begging" me to register Mac Ads Cleaner. WTF? This thing is acting a lot like malware. Now I'm starting to wonder if it's a good time to do that full format/reinstall I've been thinking about doing for a few months.