pk
3
Brightness problem was brought in alongside separating old avast 6.x code from new one. This will be fixed in next program update (this bug depends on your graphics card, it doesn’t affect all safezone users). You can also log off and log in back, or use a brightness control tool (e.g. from download.com).
As for lagging problem… do you use avast firewall? You can use http://www.thesycon.de/deu/latency_check.shtml to find out which HW driver causes your lagging.