Web shield problem

Hi,

When avast webshiled is enable, my web surf is work very slow, why? Ho can i solve this problem.

What other security programs / firewall do you have installed?

What OS/SP ?
What exact version of avast ?

Windows Vista, Comodo firewall with defense, avast internet security v2015.10.0.2208, firewall disabled.

Update to the latest version: https://forum.avast.com/index.php?topic=167184.0

after update, delete all avast rules in comodo firewall, reboot computer and make new rules when firewall ask

is it final version?

For now, yes.