Windows 7 Service Pack 1 breaks WoT?

Vallter: Make sure your antivirus software or firewall integrated in SP1 do not block the client connection with the server. We remind you that after updating your OS all firewall\antivirus settings were nulled. During the first game start bring the game application in the trusting list.
Please open the following ports in the net settings:
• UDP range 3478, 3479, 5060, 5062, 12000-29999 and 32800-32901
Allow WorldOfTanks.exe to use UDP and TCP protocols.
As well as IPs: 174.34.231.0-174.34.231.255
If you use Proxifier, please open the following ports:
3128,80,8080,20000-25000,32801,32803, and crucially - 443.
Please open the directory "C:\WINDOWS\system32\drivers\etc" (Windows XP) or open the directory "c:\Windows\winsxs\" and search for "hosts" (Windows Vista/7), choose the "hosts" file, open it with the notepad and type manually: 174.34.231.143 login-master.worldoftanks.com