Everytime I click on multiplayer itt comes up with a screen and says that it wasnt quit properly last time it ran. Then I click on run in safe mode and then it pops up and says some numbers and letters and says Call Of Duty has stopped working. It says I can either go online and diagnose the problem or close the program. If I click diagnose it says its loading and then does absolutely nothing. I'm running on Windows Vista Home Premium so i really dont know whats going on. Battlefield 2 runs just fine. Singleplayer on Call Of Duty 4 is slow and laggy unless I set the resolution to the lowest it can go. I can try to increase the resolution and see how it works but I just want to play multiplayer. I've uninstalled it and reinstalled it twice.