Please post the full text of the errors ?
The avast Script Blocker has a pop-up splash screen when it starts, I believe that you can switch that off.
What is your firewall ?
Does it allow ashWebSv.exe and ashMaiSv.exe internet access ?
- If it does delete the entry for it and do a check for email and reconnect to the internet, this should force the firewall to ask permission again.
avast doesn't block but scans and alerts to infection, if a file appears to be blocked, it is likely to be some conflict, usually a previous AV or security application which also has similar functions.
Have (or did) you another Anti-Virus installed in this system, if so what was it and how did you get rid of it ?
What other security based software do you have installed ?