I am using Avast 6.1 Free Edition and am having trouble with site blocking function, it doesn't always work. I have added three web sites for blocking but it doesn't block one of the sites at all. Is there any reason for this failure and what can I do about it?
Well it should work in the same way for all of your exclusions, so there has to be a difference in the one that doesn't work, typo, etc. This is why we need to know the site you are trying to block and exactly what you have entered in the site blocking entry.
When posting the URLs change the http to hXXp to break the link so it isn't active.
Why is it that you are trying to block these sites ?
The reason I ask is the web shield site blocking isn't designed as a heavy duty blocking tool as you have to enter single entries and manage the entries manually (no import/export feature).
There are far better methods to achieve this blocking, generally most firewalls have such a feature or the HOSTS file or a HOSTS file manager software.