Features:
The good: Norton AntiVirus 2010 treads lightly on your CPU, while bolstering last year's reputation-based detection engine with a new behavioral detection system.
The bad: Despite dramatic performance improvements in the past two years, Norton still doesn't leave the smallest footprint on your CPU, and new efficacy results show that while it continues to be in the top five at detecting malicious software, it still doesn't have the highest rate of detection.
The bottom line: Norton AntiVirus 2010 builds on the immense progress made in last year's version, maintaining a low system profile while strengthening its security framework. It's not perfect, but even Symantec's detractors should check it out.