Limewire does not attempt to put worms in your system.....
Where did you get your update of LW from??From here:
http://www.limewire.com/
Some badly written Spwware programs sometimes recognize LW as a threat; this can be solved by either including LW into the exception list of such a program or by uninstalling such a poor program and using a more reliable one.
As for your Norton,......read here about how to configurate it properly:
http://www.gnutellaforums.com/showth...threadid=30505 