My issue involves three apps and Avast 6.0
OS: Win7 64
Apps: Firefox 6.0, MS Outlook 2000, and Desktop Sidebar (an RSS feed www.desktopsidebar.com )
At OS start all apps function until Outlook 2000 starts. After Outlook 2000 starts Firefox will not start and accessing the weather feed on Desktop Sidebar will crash it. If I turnoff Avast Script shield all three apps work again although I must restart Desktop Sidebar.
I suspect this problem is so unique to me that no solution is possible, but I thought I would check.
1_ web shield → EXPERT settings → “…well known browsers only”
2_ delete firewall rules related to Avast, reboot and try again. Your firewall should ask you for permissions. When that happens, accept so the firewall can rebuild Avast related rules.