Hi i'm the new user in this forum, however using Avast from many years....
Anyways, whats the problem created in my system is that after installing Avast 5.0 internet security, the system speed drastically goes down ONLY AT LOGON.
At welcome screen it takes 10 minutes (approx) and then shows me desktop.. AFTER IT ONLY AVAST FREEZES (it dont work and when opened its in not responding state) REST MY SYSTEM RUNS VERY SMOOTH. I can open any program easily. It seems that avast is not even scanning them.....