We are sorry that WebAdvisor creates a log file of a higher size.I would request you to uninstall WebAdvisor from Control Panel and also removing the Extension from the browsers. Reinstall WebAdvisor by following the Article below and then add the extension to the browsers. This should fix the issue and will make sure that latest version is being installed.
How to download and install McAfee WebAdvisor
If in case you have any concerns please feel free to reply ot this post or contact our support using the below support link.