Cannot Connect To Minecraft.Net

[Warg321]

Launcher Version: 1.0.1.0

Operating System: Microsoft XP Professional

Java Version: Java 7 update 5

Antivirus Program: I removed AVG Yet still does not connect

Description of Problem:

After finally fixing the launcher problem, It does not allow me to log in and connect to minecraft.net , i have a premium account and have connected to minecraft.net on other computers, yet this current computer does not let me, i want to play offline yet i have to connect at least once and it wont let me do this, i have good internet connection, any solutions?

Error Messages:

Cannot connect to minecraft.net

Error Log:

[Backplague]

Make sure your firewall allows the launcher to have a connection.

[Warg321]

I've removed the firewall, and it still does not connect.