Welcome to the world of P2P

#1 - There is a way to block adult content from appearing in your search results --tool/options/filters/keywords Enable Ignore Adult Content.

#2 - Nasty is a matter of opinion -- If the content in question doesn't envolve children then I doubt that there is little you can do.

#3 - There is a preview function in limewire that lets you preview files you are downloading especially videos to verify that they are what they claim to be.

#4 - You cannot delete a file if you have it open -- If you want to make sure you get rid of it close any application that may have it open --this may include limewire and then delete it. (I assume you know where it is on your hard drive?)

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Lee Evans, President
LeeWare Development
http://www.leeware.com