One problem i have found is while installing the new 4.8 avast when you open the installer and start to go through the process of installing if you have to go back you have to start all over every time i click on the back button change the settings and try to hit next it just glitches and wont go any further.
One problem i have found is while installing the new 4.8 avast4.8 is the old program, 5.0 is the new...... ;) http://www.avast.com/security-software-home-office