Hi, i have no router and on high speed, i had a problem with Sc2 when i wanna play multiplayer, my internet connection was going down, i had to reboot the modem, i did "format c:" and completly reinstall my system. Now i have no firewall, only win XP and Sc2 installed and i have the same problem, i can play multiplayer other games but Sc2 **** up my connection everytime, someone had this problem? thank you.