Today i found a strange thing that avast webshield don't work.
I was just glance at avast ,i found the webshield don't scan anything in web page when my IE7.0 browser had been run 6 hours
Then I restart IE7. It is ok
I don't catch screen before i restart IE7 just the photo after restart IE.
I haven't found the phenomena before used old version. Hope the phenomena is specific to me.