Who's telling you ? Limewire or your security? I had that happen but from my antivirus not from Limewire. There's no problem with Limewire try to Repair or find out why it's corrupted . Maybe it's not a totally complete file that you completetly downloaded. That happens. Some people share some incomplete files and it screws up a lot of things. I know it's a bummer. GoodLuck

Don't do to others what you wouldn't like to be done to you !!!