Symantec has published a removal tool for the new Spybot.ACYR worm which manipulates the SYM06-010 vulnerability within the Norton or Symantec anti-virus product itself, (along with several popular Windows exploits).  Symantec users should apply the AV updates offered by the vendor during Spring 2006, if they have not done so yet.  The removal tool is beneficial as Spybot embeds itself within the Windows registry and it is tough to remove manually. 

W32.Spybot.ACYR - New Symantec Removal Tool