Recently for the first time, installed Norton Internet Security 2009 replacing Norton AntiVirus. Well pleased thus far with all the features and it appears that NIS 2009 has almost everything needed for security. However, my question deals with running other anti software alongside the NIS 2009. Using Spy Sweeper and Ad Aware for several years, are there any benfits or known/potential problems in running these two programs alongside the Norton Internet Security? Any and all comments will be appreciated. At the moment have uninstalled both Spy Sweeper and Ad Aware.