no, its pure nonsence,
if there was a lawsuite agains any of the LW downloaders you would have knowabout it in the news and stuff, as i said i have big experience with filesharing, i think i transmitted about 900 terabyte of files before i got mail from the government with just a notice and a warning that they knew and would take action if i continued in the same way, so i'm talking about way over 1000 files, i'm talking 1,000,000 files and more. and afcourse i did stop useing that method (wich is faster for both sender and receiver) and i switched to p2p in those days when kazaa wasn't screwed yet, now i use LW since it has no Spyware and since i don't like kazaa, actually i used napster aswell, wich was the best program ever till they got sued
because they used an illegal way of sharing (they stored data of wich file is where and made that known to the users if you want to know the specifics search in the archive of any large newspaper. anyways, don't sweat it, you won't get sued. not even if you share 10,000 files.
greetz Panic