When you install anything be sure you know it is clean. Please don't put this garbage in your machine in the first place. Love the quote at Block-Checker.com proud to be spyware free, sure. Yet the only way we learned of the product was through McAfee this is clearly a good sign.
Virus Characteristics
This Trojan lowers internet security settings, adds itself to firewall exclusion policies and downloads multiple adwares.
It adds itself to Add Remove Program with the names "Block-checker 1.0" and "System Process". If the user tries to uninstall "System Process", this Trojan attempts to download various adwares on the system. This is related to Block-Checker.com.
Upon installation the program it displays EULA. The privacy policy is located at
http://www.system-processes.com/liscense.php
It is observed to contact the following sites apart from various other
adware sites that it downloads.
See McAfee for details