Hello vojtech,
are you saying then that you've completely stopped providing the plugin for The Bat!? I rather hope not!
I also just upgraded to Avast 5 Pro (3 year licence) from v 4.8 Pro and noticed that the plugin for The Bat! was absent. This is a big issue for me as I rely on it being present. Aside Avast's performance, this was one of the main reasons I purchased Avast pro, and to find that it is simply withdrawn without any warning (if this is the case) wouldn't in any way be fair on customers...IMO.
Please can make available a plugin for The Bat! and restore functionality for your Avast / TB! users.
Thankyou.