Why does Yahoo! Messenger allow people that are not on your buddy list to send you files? Seriously, there should be an option to disable anyone sending you a file that is not on your buddy list. If you want to trust anyone, you can disable that option, otherwise you should be able to turn it on and prevent anyone from giving you viruses. Not only that, but I’ve noticed that somehow people that send you files over and over can crash your Yahoo! Messenger or lock it up so you have to Control-Alt-Delete and kill the program.