There has been some problems with logging into Windows Live Messenger if using AVG-Antivirus Vers. 8.0 over the last past days. Users get the errorcode 81000395. There is an error in AVG 8.0. Hopefully the problem will be solved soon. Until then the problem can be solved as following:
-open AVG Antivirus
-Click on "Web Shield"
-Click on "Instant Messaging" tab
-Uncheck "MSN protection" box
-Click Save Changes