Don't use Limewire if you have kiddie porn on your computer. Or any other peer-to-peer network, for that matter.
It's not a Fourth Amendment violation for the government to sign on and check out other people's computer. Even if you tried (but failed) to turn off that feature on Limewire.
You don't have a reasonable expectation of privacy in such cases. And it's such an easy way to investigate, you'll almost surely get caught.
You'll also spend around four years in prison. Where, I'm fairly certain, people won't think that your offense is at all "cool". Plus, no pirated movies.
