Im going to ask you the obvious questions first: WHERE did you get Limewire?(meaning what website), what version do you have and what OS are you using? Limewire shouldnt crash unless you are using a fake or bogus Limewire version that you got from somewhere. I have never had any system crash with limewire also, check your settings, firewall etc and scan your system for any viruses/trojans. Limewire is extremely stable & reliable unless you did something to to or picked up a virus while downloading.