eFast_Browser may drive you crazy:
Once EFast_Browser or eFast getting into your PC, most of the websites that you visit on a daily basis have graphic ads by EFast_Browse. Some of these occurrences are "pop-up" windows, some are just showing the ads right in the space on the website (which usually just shows advertisements at random). Moreover, EFast_Browser also keeps coming up as a Hyper Text Document with a broken image that appears in the middle of your screen.
