guys, please answer me as soon as you can! something happened to my browser and I just cannot understand what causes this problem. my homepage was changed to, which is a search engine. sadly, that’s not all. I constantly receive UrBookDownload ads! They show up on my screen daily, and I have no idea how to stop them. These ads ask me to sign up on websites that I have never heard of in my life. What is going on? 🙁