Just a note to people deleting stuff that they download accidentally.

Personally I would remove the hard drive, get the largest hammer I could find break it open and destroy the disks, then throw them into the nearest, biggest, deepest ocean/lake I could find. Only then I would sleep just a little better at night.
I hope I have not trivialized the subject with the above comment but I feel that is the length you have to go to.

This stuff destroyes your mind with worry. Murderers get shown more pity -compassion than a person caught with this stuff for some strange reason, no matter how they aquired it, not that I say its necessarily right but thats the tragedy of it, if you are found to have it or you may not even know its there you are doomed if caught. There will be innocent people of all ages out there now not knowing it may be lurking on their computer in some form or other. It may be hard to differentiate between these people so law eforcement probably think sod it, do them all best safe than sorry. Do they let people off if they can tell it was an accidental download? or do you get done regardless. I cant bear the thought of an person accidentally downloading it and jailed for it, terrible.

I dont know if i could trust an eraser to do it properly. Systems seem capable of squirreling stuff away into the depths of computers that no normal person or erasers may normally find.

well thats my garbled waffle on the subject, after my similar experiances as that of many other people in this forum, this is only limewire what of the many people using other file share applications, or am I just overeacting.

Internet Watch Foundation (IWF), combating child abuse images and criminal material online

http://www.ic3.gov/