Many new devices are cluttered with programs that you never installed, never requested, and many not want. There’s nothing like the fresh, clean feeling of unboxing a brand-new computer or smartphone. Too bad the feeling usually comes to an end the moment you hit the power button. ... Bloatware isn’t all bad — you might end up buying that antivirus program. But it can also slow down your machine and waste valuable storage space. And every now and then, these unwanted programs will even threaten your privacy. Late last month, the Chinese computer maker Lenovo admitted that a bit of...