诺顿的我感觉从来没有不好用过
我用过的有
Symantec AntiVirus 8.1
Symantec AntiVirus 9.0.0.338
Symantec AntiVirus 9.0.0.1400
Symantec AntiVirus 9.0.1.1000
Symantec AntiVirus 9.0.2.1000
Symantec AntiVirus 9.0.3.1000
Norton AntiVirus 2002
Norton AntiVirus 2004
Norton AntiVirus 2005
Norton Internet Security 2004
Norton Internet Security 2005