Dear,
After the problem with my Home Network, avast! was blocking some sites.
Even on this forum, I couldn't preview my posts.
Since I installed a Free AV, I have no problems anymore.
Together with 2 friends, we are testing Panda, Avira and Comodo Free.
Until the update 2014, I was very satisfied with avast! Internet Security.
Sorry, but I'm tired waiting a whole minute before having access to an Internet Site, or having no access at all.
Grtz, André.