The way Symantec tries to get into anti-spyware...

... and if they can't do it with quality, they'll try with libel.

from Spybot-S&D website:
Back in April 2005, Norton Antivirus by Symantec already had a false positive about one of our products. We couldn't get Symantec to react at first, we wrote an article about that on our website. After that, Symantec could suddenly react, and told us that it would be a question of honor to deal with such things without any publicity. They removed the false positive, and we removed their name from that news article.

Now, we have received more and more complaints over the year that Symantec would recommend to its customers to deinstall Spybot-S&D....

Full story
http://safer-networking.org/en/news/2006-01-07.html