I have install Bitdefender internet securty 2008.Bitdefeder blocks up all traffic on network card,after ten minutes.I cant acces not even to router.Helps only repeated startup windows.Microsoft Windows Vista Ultimate ,DualCore AMD Athlon 64 X2, 2300 MHz (11.5 x 200) 4400+,Gigabyte GA-M57SLI-S4,nVIDIA nForce 570 SLI (MCP55P) - Gigabit LAN Controller (PHY: Marvell 88E1116)PCI.