You can now grab and stress-test Norton AntiVirus and Norton Internet Security 2011 public betas. These free testers are partially baked previews of the consumer products Symantec will release later this year.
They continue the course that Symantec set for Norton with the 2009 version and appear to retain the fast scan benchmarks of the 2010 version. There's not much that's dramatically new; however, there's a lot more Norton Insight and Quorum data that gets exposed than before. This makes the programs feel more connected to both the Norton Quorum community-sourced protection data and to your own computer's performance and behavior.