At the moment April 11th at 22.50 slowly my connection to the forums returned, also had problems updating avast 6.0
I get an "Error HTTP error (403) at attempt 174.36.159.199:80iavs5x.servers.def
We’ve turned the updates off to prevent most of the users access to the wrong definition update.
After uploading the new update, we’ve turned them back on, so that all of the users (both affected and unaffected) would be getting only the fixed database.