Well limewire keeps restarting and will open every 2 minutes when i close it and when i am downloading something big it sometimes restarts and its becoming extremely annoying.Not the restarting part as i continues to download when it does so but the opening part i have to block it with firewall until i want to use it and i know i shouldn't have to do this.

ANY help would be great!

This is a virus, see point 4 here
WARNING: Viruses on the network you should be aware of

Go to Norbiesworld (click on link). Register at Norbie's site & follow the instructions for free computer help, he will help you to get rid of the virus

Always make sure that you're using a good AV program, keep it updated & scan any downloaded file before opening it!