There was a yellow icon with a "!" that announced new updates. So it must be the HAM. (It's only now that understand that word: HAM=hildon-application-manager.) I would like to know why the iptable script doesn't work. The author of the original script writes that the line: $IPTABLES -A OUTPUT -o $INET_IFACE -p tcp --dport 80 -m state --state NEW -j ACCEPT was necessary for sources.list to download. If I use this line only for wlan0 and not for gprs0 it should block download for 3D shouldn't it?