Fail to update A-GPS with Firewall Enabled on Galaxy S2

Hi, i have Samsung Galaxy S 2 (I9100) with JB 4.1.2 stock firmware (rooted by update.zip with chainfire su, kernel not rooted)

Installed avast with enabled firewall & anti-thief.

The problem with my GPS. With enabled firewall GPS works wery slow. If I disable firewall - GPS works fine!

Same phone (my wife phone) with avast with disabled firewall works fine.

If I disable firewall on my pjone and start using GPS on both phones - all fine :slight_smile:

Sorry my english :frowning:

How to fix it?

Why google DNS servers blocked?