are there any AVAST guys writing in these forums...
??
As far as I know it is a user to user forum. Some of the avast team will occasionally post but one can't count on it.
Whilst you wait to see whether any other user can offer a workaround or solution, I would certainly submit a support ticket directly to Avast.
Rather than disabling all the shields via the menu options when you right click on the task bar icon, have you tried turning off the Web shield only.
Avast GUI->Settings->Active protection->Click on the blue Web shield "ON" to turn it off.
Yes, it may reduce your protection a bit, but if the file System shield does its job properly, it should stop any virus that might be downloaed from the web from becoming active. My guess is that you purchased your computer so you could use it to do your own things, not so you could spend heaps of time tryiong to get an antivirus program to behave itself, and if you can achieve that by dropping the web shield, then so be it. Another alternative is to see whether other AV products let you do what you want to do.
